Chondroitin
7 benefits mapped to clinical evidence across supplements.
Dose per serving from products
41 products in our catalogue print how much Chondroitin a serving holds.
Most common: 1 g to 2.5 g, 39% of 41 products.
| Dose per serving | Products |
|---|---|
| 50 mg or less | 1 |
| 50 mg to 100 mg | 4 |
| 100 mg to 250 mg | 5 |
| 250 mg to 500 mg | 8 |
| 500 mg to 1 g | 7 |
| 1 g to 2.5 g | 16 |
Dose per serving from research
60 study groups in 49 studies say how much Chondroitin participants took a day.
These are the doses the studies gave. They are not a recommendation.
Most common: 500 mg to 1 g and 1 g to 2.5 g, 42% of 60 study groups each.
| Daily dose | Study groups |
|---|---|
| 100 mg or less | 2 |
| 100 mg to 250 mg | 5 |
| 250 mg to 500 mg | 3 |
| 500 mg to 1 g | 25 |
| 1 g to 2.5 g | 25 |
Commonly used together
28 of 60 study groups took Chondroitin with something else. Shown: what 3 or more different studies gave.
What was given together, not what works together.
| Taken with | Study groups |
|---|---|
| Glucosamine | 24 |
| Hyaluronic Acid | 5 |
| Type-II Collagen | 4 |
Benefit Evidence
Research sources
Joint mobility (60)
- Combined chondroitin sulfate and glucosamine for painful knee osteoarthritis: a multicentre, randomised, double-blind, non-inferiority trial versus celecoxib
PubMed ID: 25589511
6‑month noninferiority RCT vs celecoxib showed marked improvements in WOMAC pain/stiffness/function, indicating improved mobility.
- Efficacy of an oral hyaluronate and collagen supplement as a preventive treatment of elbow dysplasia
PubMed ID: 25234322
Reduced incidence of elbow dysplasia and improved clinical signs in dogs supports preservation of joint integrity when supplement given early.
- Combined glucosamine and chondroitin sulfate, once or three times daily, provides clinically relevant analgesia in knee osteoarthritis
PubMed ID: 25085275
Large 16‑week trial: glucosamine+chondroitin produced large pain reductions and improved Lequesne function—strong evidence for improved mobility.
- Glucosamine and chondroitin for knee osteoarthritis: a double-blind randomised placebo-controlled clinical trial evaluating single and combination regimens
PubMed ID: 24395557
Demonstrated structural preservation (less JSN) over 2 years, indicative of long‑term joint resilience.
- Equivalence of a single dose (1200 mg) compared to a three-time a day dose (400 mg) of chondroitin 4&6 sulfate in patients with knee osteoarthritis. Results of a randomized double blind placebo controlled study
PubMed ID: 23059756
3-month knee OA trial: chondroitin regimens improved Lequesne index and VAS vs placebo — clear support for improved joint function.
- Chondroitin sulfate and/or glucosamine hydrochloride for Kashin-Beck disease: a cluster-randomized, placebo-controlled study
PubMed ID: 22469850
Kashin-Beck cluster-RCT: chondroitin improved WOMAC total and stiffness and increased pain responder rates — supports improved joint function.
- Chondroitin sulphate reduces both cartilage volume loss and bone marrow lesions in knee osteoarthritis patients starting as early as 6 months after initiation of therapy: a randomised, double-blind, placebo-controlled pilot study using MRI
PubMed ID: 21367761
MRI trial: slowed cartilage loss and some BML improvements are direct evidence that chondroitin supports longer-term joint structural resilience.
- Symptomatic effects of chondroitin 4 and chondroitin 6 sulfate on hand osteoarthritis: a randomized, double-blind, placebo-controlled clinical trial at a single center
PubMed ID: 21898340
Hand OA RCT: chondroitin significantly improved hand function (FIHOA) — direct evidence for improved joint function.
- Effects of chondroitin sulfate and glucosamine in adult patients with Kaschin-Beck disease
PubMed ID: 20108108
Kaschin-Beck RCT: preserved JSW with chondroitin+glucosamine over 8 months is direct evidence supporting long-term structural resilience.
- Effectiveness of chondroitin sulphate in patients with concomitant knee osteoarthritis and psoriasis: a randomized, double-blind, placebo-controlled study
PubMed ID: 20399899
Knee OA RCT: symptomatic and functional improvements with CS reflect maintained/improved joint health in patients with knee OA and psoriasis.
- Comparison of the efficacy and tolerability of chondroitin plus glucosamine and D-002 (beeswax alcohols) in subjects with osteoarthritis symptoms
PubMed ID: 28657529
12‑week RCT (glucosamine+chondroitin) produced large improvements in WOMAC/function.
- Chondroitin sulfate efficacy versus celecoxib on knee osteoarthritis structural changes using magnetic resonance imaging: a 2-year multicentre exploratory study
PubMed ID: 27809891
Long‑term RCT demonstrating less medial cartilage loss and sustained symptom benefit supports maintenance of joint health.
- Efficacy and safety of piascledine 300 versus chondroitin sulfate in a 6 months treatment plus 2 months observation in patients with osteoarthritis of the knee
PubMed ID: 20179981
6‑month RCT of chondroitin showed ~50% WOMAC improvement (functional gains).
- [Comparative efficacy of a combination of undenatured type II collagen, Boswellic acids, methylsulfonylmethane, vitamins C and D(3) and a combination of chondroitin sulfate and glucosamine hydrochloride in the treatment of primary osteoarthritis of the knee joint]
PubMed ID: 38785054
Improved WOMAC/VAS and MRI markers indicate functional benefit.
- Galactosaminoglycuronoglycan sulfate (matrix) in therapy of tibiofibular osteoarthritis of the knee
PubMed ID: 1914837
Smaller RCT of a related GAG product reduced OA symptoms, suggesting moderate improvement in mobility.
- [Chondroitin sulfate in the treatment of gonarthrosis and coxarthrosis. 5-months result of a multicenter double-blind controlled prospective study using placebo]
PubMed ID: 1485136
Chondroitin RCT showed significant improvement on pain/function indices and reduced NSAID requirement, indicating better joint function.
- Comparison of the antiinflammatory efficacy of chondroitin sulfate and diclofenac sodium in patients with knee osteoarthritis
PubMed ID: 8856618
Randomized knee OA trial showed significant improvement in Lequesne/indexed function and pain-driven mobility gains.
- Efficacy and tolerability of chondroitin sulfate 1200 mg/day vs chondroitin sulfate 3 x 400 mg/day vs placebo
PubMed ID: 9743816
Significant Lequesne Index improvement at 3 months indicating better joint function.
- Effects of oral chondroitin sulfate on the progression of knee osteoarthritis: a pilot study
PubMed ID: 9743819
One‑year structural stabilization (joint width) and biomarker effects support maintenance of joint health.
- Efficacy and tolerability of oral chondroitin sulfate as a symptomatic slow-acting drug for osteoarthritis (SYSADOA) in the treatment of knee osteoarthritis
PubMed ID: 9743817
6‑month RCT decreased Lequesne Index and improved walking time — clear functional benefit.
- Chondroitin sulfate: S/DMOAD (structure/disease modifying anti-osteoarthritis drug) in the treatment of finger joint OA
PubMed ID: 9743818
Three‑year RCT in finger OA showing reduced erosive progression provides direct long‑term resilience evidence.
- [Anti-arthrosis treatments: efficacy and tolerance of chondroitin sulfates (CS 4&6)]
PubMed ID: 9856136
Large (~50%) improvement in Lequesne functional score after 1 year.
- [Structum (chondroitin sulfate)--a new agent for the treatment of osteoarthrosis]
PubMed ID: 10399232
Structum + ibuprofen improved the Lequesne functional index vs ibuprofen alone.
- Efficacy of a combination of FCHG49 glucosamine hydrochloride, TRH122 low molecular weight sodium chondroitin sulfate and manganese ascorbate in the management of knee osteoarthritis
PubMed ID: 10966840
Combination supplement including chondroitin improved Lequesne Index and response rate in knee OA patients.
- [GAG for osteoarthritis of the knee--a prospective study]
PubMed ID: 10883158
IV glucosamine + 800 mg chondroitin study specifically reported improvements in range of motion after 4 weeks.
- Chondroitin sulfate in osteoarthritis of the knee: a prospective, double blind, placebo controlled multicenter clinical study
PubMed ID: 11196521
Completers had significant AFI improvement after 3 months of chondroitin.
- [Results of the multicenter clinical trial of structum preparation in Russia]
PubMed ID: 11806217
Significant reductions in functional (Lequesne) scores indicate improved joint function in knee and hip OA patients.
- Systems to assess the progression of finger joint osteoarthritis and the effects of disease modifying osteoarthritis drugs
PubMed ID: 12111630
Three‑year reductions in radiographic progression and erosive episodes indicate sustained protective effects.
- [Radiological progression of internal femoro-tibial osteoarthritis in gonarthrosis. Chondro-protective effect of chondroitin sulfates ACS4-ACS6]
PubMed ID: 12375395
Longitudinal preservation of cartilage and joint-space width supports improved mechanical shock absorption of the joint.
- A randomized, double blind, placebo controlled trial of a topical cream containing glucosamine sulfate, chondroitin sulfate, and camphor for osteoarthritis of the knee
PubMed ID: 12610812
Topical glucosamine+chondroitin reduced knee pain and WOMAC symptoms, which commonly translate to improved mobility.
- [Long-term effects of structum administration (according to data from multicenter trial)]
PubMed ID: 14582441
Structum follow-up documented months-long symptomatic improvement and less NSAID use, consistent with better mobility in many patients.
- Intermittent treatment of knee osteoarthritis with oral chondroitin sulfate: a one-year, randomized, double-blind, multicenter study versus placebo
PubMed ID: 15023378
One‑year RCT showed prevention of JS narrowing and improved function, supporting maintenance of joint health.
- Chondroitins 4 and 6 sulfate in osteoarthritis of the knee: a randomized, controlled trial
PubMed ID: 15751094
Two‑year slowed JSW loss supports maintenance of joint structural health over time.
- Long-term effects of chondroitins 4 and 6 sulfate on knee osteoarthritis: the study on osteoarthritis progression prevention, a two-year, randomized, double-blind, placebo-controlled trial
PubMed ID: 19180484
STOPP: chondroitin reduced JSW loss over 2 years and improved pain earlier — strong evidence for supporting long-term joint resilience.
- [Combined medication ARTRA in the treatment of osteoarthrosis]
PubMed ID: 16404866
Combination glucosamine+chondroitin produced significant WOMAC/function improvements and decreased NSAID reliance—supports improved joint function clinically.
- Bifidobacterium animalis subsp. lactis Probio-M8 enhances chondroitin efficacy for knee osteoarthritis in postmenopausal women via the gut-joint axis
PubMed ID: 41313018
Adding a probiotic to daily CS improved WOMAC pain/function versus CS alone, implying better mobility.
- [Combination therapy for exacerbations of pain in osteoarthritis with non-fixed combinations]
PubMed ID: 40561485
Regimen including CS (with added collagen) produced objective mobility gains (walking speed +12%, Timed Up‑and‑Go −42%).
- Nutrition supplementation combined with exercise versus exercise alone in treating knee osteoarthritis: a double-blinded, randomised, placebo-controlled trial
PubMed ID: 39982001
Supplement (contains CS) + exercise produced earlier/larger WOMAC function improvements and better performance measures vs exercise alone.
- Cost-Effectiveness Analysis of Pharmaceutical-Grade Chondroitin Sulfate for Knee Osteoarthritis Based on Individual Patient Data from a Randomized Clinical Trial
PubMed ID: 39476307
Economic analysis based on large RCT data indicates prescription CS provides modest sustained QALY gains over 6 months, consistent with maintained joint health.
- Oral supplementation with fish cartilage hydrolysate in an adult population suffering from knee pain and function discomfort: results from an innovative approach combining an exploratory clinical study and an ex vivo clinical investigation
PubMed ID: 37735385
Walking VAS pain decreased by ~29 mm after fish cartilage hydrolysate (contains CS), indicating clear improvement in walking comfort.
- The effect of oral low molecular weight liquid hyaluronic acid combination with glucosamine and chondroitin on knee osteoarthritis patients with mild knee pain: An 8-week randomized double-blind placebo-controlled trial
PubMed ID: 33592868
WOMAC physical function improved significantly with oral HA+glucosamine+chondroitin vs placebo.
- Treatment of knee osteoarthritis with a new formulation of a fixed-dose combination of glucosamine sulfate and bovine chondroitin: a multicenter, randomized, single-blind, non-inferiority clinical trial
PubMed ID: 33468249
Large RCT showed substantial WOMAC pain reductions including pain on walking and high responder rates.
- [Chondroprotector transdermal magnetophoresis for osteoarthritis of the knee]
PubMed ID: 32207707
Transdermal chondroxide magnetophoresis produced significant pain relief and functional gains (OMERACT‑OARSI responders).
- Differences in Serum Biomarkers Between Combined Glucosamine and Chondroitin Versus Celecoxib in a Randomized, Double-blind Trial in Osteoarthritis Patients
PubMed ID: 30648524
Modest IL‑6 suppression by GH+CS indicates a biological route to support long‑term joint resilience.
- Effect of an oral preparation containing hyaluronic acid, chondroitin sulfate, hydrolyzed collagen type II and hydrolyzed keratin on synovial fluid features and clinical indices in knee osteoarthritis. A pilot study
PubMed ID: 33213125
WOMAC/Lequesne function improvements after multi‑ingredient supplement including chondroitin.
- [Therapy of nonspecific lower back pain in patients with high cardiovascular risk]
PubMed ID: 31626166
Injectable chondroitin produced rapid large pain reductions in low back pain program enabling better mobility (observational).
- [The effectiveness of complex therapy using the injectable form of chondroitin sulfate and sodium hyaluronate with osteoarthritis of the knee joint]
PubMed ID: 32598683
Injectable chondroitin reduced walking pain ≈30% — direct evidence for improved walking comfort.
- A Randomized, Double-Blind, Placebo-Controlled, Prospective Clinical Trial Evaluating Water-Soluble Chicken Eggshell Membrane for Improvement in Joint Health in Adults with Knee Osteoarthritis
PubMed ID: 31381494
Rapid stiffness improvements (WOMAC stiffness subscale) and early benefit (day 5) suggest improved joint flexibility.
- Effectiveness of Non-Animal Chondroitin Sulfate Supplementation in the Treatment of Moderate Knee Osteoarthritis in a Group of Overweight Subjects: A Randomized, Double-Blind, Placebo-Controlled Pilot Study
PubMed ID: 31470599
TLKS function improved significantly vs placebo; strong direct evidence of improved joint function.
- Bone curvature changes can predict the impact of treatment on cartilage volume loss in knee osteoarthritis: data from a 2-year clinical trial
PubMed ID: 28339999
Two-year cartilage-sparing signals in defined subgroups suggest chondroitin may contribute to longer-term structural resilience in those patients.
- Effect of chondroitin sulphate on synovitis of knee osteoarthritic patients
PubMed ID: 28245911
Reduced synovitis and pain with chondroitin correlated with improved pain/function measures vs acetaminophen.
- Levels of serum biomarkers from a two-year multicentre trial are associated with treatment response on knee osteoarthritis cartilage loss as assessed by magnetic resonance imaging: an exploratory study
PubMed ID: 28728606
Biomarker predictors for better cartilage outcome indicate potential for longer-term resilience in responders.
- Pharmaceutical-grade Chondroitin sulfate is as effective as celecoxib and superior to placebo in symptomatic knee osteoarthritis: the ChONdroitin versus CElecoxib versus Placebo Trial (CONCEPT)
PubMed ID: 28533290
CONCEPT trial showed statistically significant improvement in the Lequesne Index (function) with chondroitin vs placebo.
- The efficacy and safety of a combination of glucosamine hydrochloride, chondroitin sulfate and bio-curcumin with exercise in the treatment of knee osteoarthritis: a randomized, double-blind, placebo-controlled study
PubMed ID: 26937646
Glu–Cho–curcumin + exercise reduced movement‑related pain and improved functional scores vs placebo.
- Glucosamine-containing supplement improves locomotor functions in subjects with knee pain: a randomized, double-blind, placebo-controlled study
PubMed ID: 26604721
Reported increased normal walking speed and knee strength in certain subgroups — direct functional benefit for walking comfort.
- [Use of ARTRA MSM FORTE in patients with knee osteoarthritis: Results of a randomized open-label comparative study of the efficacy and tolerability of the drug]
PubMed ID: 26978418
ARTRA products containing chondroitin improved Get‑Up‑and‑Go time (earlier functional/ flexibility gains in MSM formulation).
- Effectiveness of intra-articular injections of sodium hyaluronate-chondroitin sulfate in knee osteoarthritis: a multicenter prospective study
PubMed ID: 26577936
IA HA+chondroitin results (durable pain reductions) are consistent with improved intra‑articular viscoelastic properties (shock absorption).
- Effects of glucosamine-chondroitin combination on synovial fluid IL-1β, IL-6, TNF-α and PGE2 levels in internal derangements of temporomandibular joint
PubMed ID: 25662545
TMJ trial: glucosamine–chondroitin improved maximum mouth opening (objective flexibility measure) vs tramadol.
- Comparison of the effects of sodium hyaluronate-chondroitin sulphate and corticosteroid in the treatment of lateral epicondylitis: a prospective randomized trial
PubMed ID: 26133944
HA+CS injection produced longer‑lasting functional improvements than steroid.
- Effects of N-acetyl glucosamine and chondroitin sulfate supplementation on knee pain and self-reported knee function in middle-aged and older Japanese adults: a randomized, double-blind, placebo-controlled trial
PubMed ID: 26178634
N‑acetyl glucosamine + chondroitin improved self‑reported knee function and household activity despite no VAS pain change.
Joint comfort (58)
- Nutrition supplementation combined with exercise versus exercise alone in treating knee osteoarthritis: a double-blinded, randomised, placebo-controlled trial
PubMed ID: 39982001
Multi‑ingredient supplement containing CS + exercise led to earlier and larger WOMAC pain improvements vs exercise alone.
- Oral supplementation with fish cartilage hydrolysate in an adult population suffering from knee pain and function discomfort: results from an innovative approach combining an exploratory clinical study and an ex vivo clinical investigation
PubMed ID: 37735385
Fish cartilage hydrolysate (contains CS) produced large VAS pain reductions (~30 mm) and KOOS improvements over 3 months.
- The effect of oral low molecular weight liquid hyaluronic acid combination with glucosamine and chondroitin on knee osteoarthritis patients with mild knee pain: An 8-week randomized double-blind placebo-controlled trial
PubMed ID: 33592868
Significant pain/function improvements with oral HA+glucosamine+chondroitin indicate better joint comfort.
- Treatment of knee osteoarthritis with a new formulation of a fixed-dose combination of glucosamine sulfate and bovine chondroitin: a multicenter, randomized, single-blind, non-inferiority clinical trial
PubMed ID: 33468249
Large RCT with major symptomatic benefit implies substantial improvement in day‑to‑day joint comfort.
- [Chondroprotector transdermal magnetophoresis for osteoarthritis of the knee]
PubMed ID: 32207707
Transdermal chondroprotective therapy produced meaningful symptomatic and functional benefits.
- Effect of an oral preparation containing hyaluronic acid, chondroitin sulfate, hydrolyzed collagen type II and hydrolyzed keratin on synovial fluid features and clinical indices in knee osteoarthritis. A pilot study
PubMed ID: 33213125
Synovial cytokine reductions and symptom relief after oral multi‑ingredient supplement including chondroitin.
- [Therapy of nonspecific lower back pain in patients with high cardiovascular risk]
PubMed ID: 31626166
Large short‑term pain reductions after injectable chondroitin translate to improved comfort.
- [The effectiveness of complex therapy using the injectable form of chondroitin sulfate and sodium hyaluronate with osteoarthritis of the knee joint]
PubMed ID: 32598683
Injectable chondroitin reduced walking pain and improved outcomes — better comfort during activity.
- A randomised pilot equivalence trial to evaluate diamagnetically enhanced transdermal delivery of key ground substance components in comparison to an established transdermal non-steroidal anti-inflammatory formulation in males with prior knee injury
PubMed ID: 30794553
Topical magnetophoretic chondroitin formulation reduced self‑reported pain though caused skin irritation.
- A Randomized, Double-Blind, Placebo-Controlled, Prospective Clinical Trial Evaluating Water-Soluble Chicken Eggshell Membrane for Improvement in Joint Health in Adults with Knee Osteoarthritis
PubMed ID: 31381494
Early and measurable WOMAC stiffness improvements with eggshell membrane (contains chondroitin) especially in impaired subgroup.
- Effectiveness of Non-Animal Chondroitin Sulfate Supplementation in the Treatment of Moderate Knee Osteoarthritis in a Group of Overweight Subjects: A Randomized, Double-Blind, Placebo-Controlled Pilot Study
PubMed ID: 31470599
Robust reductions in pain and improved function indicate strong improvement in joint comfort.
- Pharmaceutical-grade chondroitin sulfate in the management of knee osteoarthritis
PubMed ID: 29451036
Review summarizing CONCEPT and other trials concluded pharmaceutical-grade chondroitin reduces pain in knee OA — synthesis-level support.
- Bone curvature changes can predict the impact of treatment on cartilage volume loss in knee osteoarthritis: data from a 2-year clinical trial
PubMed ID: 28339999
Post-hoc analysis found chondroitin protected against cartilage volume loss in certain bone-shape subgroups — suggests preservation of cartilage and thus cushioning in responders.
- Effect of chondroitin sulphate on synovitis of knee osteoarthritic patients
PubMed ID: 28245911
Randomized trial showed significant pain improvement with chondroitin and correlated anti-inflammatory changes vs acetaminophen.
- Efficacy of Chondroitin Sulfate for Painful Knee Osteoarthritis: A One-Year, Randomized, Double-Blind, Multicenter Clinical Study in Japan
PubMed ID: 29176264
Higher-dose chondroitin produced earlier pain improvement in more symptomatic knee OA subgroup — supportive for pain relief in that group.
- Pharmaceutical-grade Chondroitin sulfate is as effective as celecoxib and superior to placebo in symptomatic knee osteoarthritis: the ChONdroitin versus CElecoxib versus Placebo Trial (CONCEPT)
PubMed ID: 28533290
Large randomized trial (CONCEPT) found statistically and clinically relevant reduction in knee OA pain vs placebo and comparable to celecoxib.
- The efficacy and safety of a combination of glucosamine hydrochloride, chondroitin sulfate and bio-curcumin with exercise in the treatment of knee osteoarthritis: a randomized, double-blind, placebo-controlled study
PubMed ID: 26937646
Glucosamine–chondroitin–curcumin + exercise reduced movement‑related knee pain vs placebo.
- [Evaluation of the combined treatment of oral viscosupplementation with hyaluronic acid intra-articular injection on symptomatic knee osteoarthritis]
PubMed ID: 26550817
Adjunctive oral HA+chondroitin after IA HA showed trends toward greater pain reduction and less analgesic use vs HA alone.
- Effectiveness of intra-articular injections of sodium hyaluronate-chondroitin sulfate in knee osteoarthritis: a multicenter prospective study
PubMed ID: 26577936
Three intra‑articular HA+chondroitin injections produced large sustained reductions in knee pain up to 6 months.
- Comparison of the effects of sodium hyaluronate-chondroitin sulphate and corticosteroid in the treatment of lateral epicondylitis: a prospective randomized trial
PubMed ID: 26133944
Single HA+CS injection improved pain and function up to 6 months vs triamcinolone.
- Combined chondroitin sulfate and glucosamine for painful knee osteoarthritis: a multicentre, randomised, double-blind, non-inferiority trial versus celecoxib
PubMed ID: 25589511
Large noninferiority RCT: chondroitin+glucosamine produced ~50% WOMAC pain reduction noninferior to celecoxib at 6 months.
- Combined glucosamine and chondroitin sulfate, once or three times daily, provides clinically relevant analgesia in knee osteoarthritis
PubMed ID: 25085275
Large multicenter trial showed ~30 mm VAS pain reductions with combined glucosamine+chondroitin — strong analgesic evidence.
- Glucosamine and chondroitin for knee osteoarthritis: a double-blind randomised placebo-controlled clinical trial evaluating single and combination regimens
PubMed ID: 24395557
Slowed JSN implies preserved cartilage thickness which could reduce crepitus/grinding; evidence is structural and indirect.
- Equivalence of a single dose (1200 mg) compared to a three-time a day dose (400 mg) of chondroitin 4&6 sulfate in patients with knee osteoarthritis. Results of a randomized double blind placebo controlled study
PubMed ID: 23059756
3-month knee OA trial: chondroitin improved Lequesne and VAS vs placebo — strong evidence for improved joint comfort.
- Chondroitin sulfate and/or glucosamine hydrochloride for Kashin-Beck disease: a cluster-randomized, placebo-controlled study
PubMed ID: 22469850
Kashin-Beck cluster RCT: combination and chondroitin-alone arms showed significant improvements in pain/stiffness/function — good evidence for pain relief in that population.
- Chondroitin sulphate reduces both cartilage volume loss and bone marrow lesions in knee osteoarthritis patients starting as early as 6 months after initiation of therapy: a randomised, double-blind, placebo-controlled pilot study using MRI
PubMed ID: 21367761
MRI trial: chondroitin slowed cartilage volume loss and improved some BMLs — direct structural evidence that supports better joint cushioning.
- Symptomatic effects of chondroitin 4 and chondroitin 6 sulfate on hand osteoarthritis: a randomized, double-blind, placebo-controlled clinical trial at a single center
PubMed ID: 21898340
Hand OA RCT showed significant reductions in pain and improved function — direct evidence for better joint comfort in hand OA patients.
- Effects of chondroitin sulfate and glucosamine in adult patients with Kaschin-Beck disease
PubMed ID: 20108108
Kaschin-Beck trial documented preserved JSW with chondroitin+glucosamine — direct evidence of preserved cartilage thickness and thus better joint cushioning.
- Effectiveness of chondroitin sulphate in patients with concomitant knee osteoarthritis and psoriasis: a randomized, double-blind, placebo-controlled study
PubMed ID: 20399899
Knee OA RCT: chondroitin significantly reduced VAS pain and improved Lequesne — clear evidence for better joint comfort.
- Long-term effects of chondroitins 4 and 6 sulfate on knee osteoarthritis: the study on osteoarthritis progression prevention, a two-year, randomized, double-blind, placebo-controlled trial
PubMed ID: 19180484
Large RCT (STOPP): chondroitin significantly improved pain faster than placebo — strong, direct evidence for pain relief.
- Effect of chondroitin sulphate in symptomatic knee osteoarthritis: a multicentre, randomised, double-blind, placebo-controlled study
PubMed ID: 17204566
24-week RCT of chondroitin produced a small but statistically significant pain reduction versus placebo (modest benefit).
- [Combined medication ARTRA in the treatment of osteoarthrosis]
PubMed ID: 16404866
Combination glucosamine+chondroitin significantly reduced pain and improved WOMAC scores, indicating improved joint comfort (combination evidence).
- Chondroitins 4 and 6 sulfate in osteoarthritis of the knee: a randomized, controlled trial
PubMed ID: 15751094
Two-year daily chondroitin slowed radiographic JSW loss vs placebo, supporting a cushioning effect despite no symptomatic change.
- Intermittent treatment of knee osteoarthritis with oral chondroitin sulfate: a one-year, randomized, double-blind, multicenter study versus placebo
PubMed ID: 15023378
Double-blind RCT (800 mg/day) showed significant decreases in Lequesne index and pain VAS over one year.
- [Long-term effects of structum administration (according to data from multicenter trial)]
PubMed ID: 14582441
Large follow-up of Structum reported months-long symptom improvement and reduced analgesic use.
- A randomized, double blind, placebo controlled trial of a topical cream containing glucosamine sulfate, chondroitin sulfate, and camphor for osteoarthritis of the knee
PubMed ID: 12610812
Randomized placebo-controlled topical trial (glucosamine + chondroitin) showed substantial VAS pain reductions vs placebo.
- [Radiological progression of internal femoro-tibial osteoarthritis in gonarthrosis. Chondro-protective effect of chondroitin sulfates ACS4-ACS6]
PubMed ID: 12375395
Large 2‑year DBPC trial showed preservation of joint-space width and cartilage measures, implying improved structural cushioning.
- Systems to assess the progression of finger joint osteoarthritis and the effects of disease modifying osteoarthritis drugs
PubMed ID: 12111630
Three-year trials in finger OA showed slowed radiographic progression and fewer erosive episodes, supporting structural cushioning.
- [Results of the multicenter clinical trial of structum preparation in Russia]
PubMed ID: 11806217
Structum (oral chondroitin) produced clinically meaningful reductions in rest and movement pain and allowed many patients to stop NSAIDs.
- Chondroitin sulfate in osteoarthritis of the knee: a prospective, double blind, placebo controlled multicenter clinical study
PubMed ID: 11196521
Completer analysis showed significant reductions in pain at rest and activity after 3 months of oral chondroitin.
- [GAG for osteoarthritis of the knee--a prospective study]
PubMed ID: 10883158
Short IV regimen including chondroitin reduced pain and tenderness vs placebo over 4 weeks (combination therapy).
- Efficacy of a combination of FCHG49 glucosamine hydrochloride, TRH122 low molecular weight sodium chondroitin sulfate and manganese ascorbate in the management of knee osteoarthritis
PubMed ID: 10966840
Combination supplement (including chondroitin) improved Lequesne scores and had a higher response rate than placebo.
- [Structum (chondroitin sulfate)--a new agent for the treatment of osteoarthrosis]
PubMed ID: 10399232
Addition of Structum reduced pain and analgesic requirement suggesting increased comfort.
- [Anti-arthrosis treatments: efficacy and tolerance of chondroitin sulfates (CS 4&6)]
PubMed ID: 9856136
Substantial functional improvement reported, consistent with improved joint comfort.
- Chondroitin sulfate: S/DMOAD (structure/disease modifying anti-osteoarthritis drug) in the treatment of finger joint OA
PubMed ID: 9743818
Three‑year finger OA RCT reduced new erosive changes, a structural finding supportive of preserved joint tissues/cushioning.
- Efficacy and tolerability of oral chondroitin sulfate as a symptomatic slow-acting drug for osteoarthritis (SYSADOA) in the treatment of knee osteoarthritis
PubMed ID: 9743817
Consistent symptomatic and functional improvements reflect better joint comfort.
- Effects of oral chondroitin sulfate on the progression of knee osteoarthritis: a pilot study
PubMed ID: 9743819
One‑year symptomatic improvements and mobility gains imply improved comfort.
- Efficacy and tolerability of chondroitin sulfate 1200 mg/day vs chondroitin sulfate 3 x 400 mg/day vs placebo
PubMed ID: 9743816
3‑month RCT showed significant reduction in VAS pain versus placebo.
- Comparison of the antiinflammatory efficacy of chondroitin sulfate and diclofenac sodium in patients with knee osteoarthritis
PubMed ID: 8856618
Well-conducted RCT in knee OA showed clear pain reduction (VAS/Lequesne) with oral chondroitin.
- [Chondroitin sulfate in the treatment of gonarthrosis and coxarthrosis. 5-months result of a multicenter double-blind controlled prospective study using placebo]
PubMed ID: 1485136
Well-conducted RCT of chondroitin sulfate showed significant pain reduction and decreased NSAID consumption in knee/hip OA.
- Galactosaminoglycuronoglycan sulfate (matrix) in therapy of tibiofibular osteoarthritis of the knee
PubMed ID: 1914837
Observed symptom reductions in the related GAG trial indicate better joint comfort.
- Daily oral supplementation with collagen peptides combined with vitamins and other bioactive compounds improves skin elasticity and has a beneficial effect on joint and general wellbeing
PubMed ID: 30122200
Multi‑ingredient nutraceutical (includes chondroitin) reduced joint pain vs placebo.
- [Comparative efficacy of a combination of undenatured type II collagen, Boswellic acids, methylsulfonylmethane, vitamins C and D(3) and a combination of chondroitin sulfate and glucosamine hydrochloride in the treatment of primary osteoarthritis of the knee joint]
PubMed ID: 38785054
6‑month study reported pain improvements with glucosamine+chondroitin or multi‑ingredient product.
- Efficacy and safety of piascledine 300 versus chondroitin sulfate in a 6 months treatment plus 2 months observation in patients with osteoarthritis of the knee
PubMed ID: 20179981
Substantial symptomatic improvement with chondroitin indicates better comfort.
- Chondroitin sulfate efficacy versus celecoxib on knee osteoarthritis structural changes using magnetic resonance imaging: a 2-year multicentre exploratory study
PubMed ID: 27809891
24‑month RCT showed sustained symptom (VAS/WOMAC) improvement with chondroitin.
- Comparison of the efficacy and tolerability of chondroitin plus glucosamine and D-002 (beeswax alcohols) in subjects with osteoarthritis symptoms
PubMed ID: 28657529
Glucosamine+chondroitin RCT showed ~76% VAS pain reductions over 12 weeks.
- Bifidobacterium animalis subsp. lactis Probio-M8 enhances chondroitin efficacy for knee osteoarthritis in postmenopausal women via the gut-joint axis
PubMed ID: 41313018
Adjunct probiotic + CS reduced WOMAC scores vs CS alone, reflecting improved joint comfort.
- [Combination therapy for exacerbations of pain in osteoarthritis with non-fixed combinations]
PubMed ID: 40561485
Regimen including CS (plus collagen) delivered noticeably greater pain and function improvement, improving perceived comfort.
Daily comfort (41)
- [Results of the multicenter clinical trial of structum preparation in Russia]
PubMed ID: 11806217
Significant decreases in Lequesne functional index indicate improved ability to perform daily activities.
- Chondroitin sulfate in osteoarthritis of the knee: a prospective, double blind, placebo controlled multicenter clinical study
PubMed ID: 11196521
Completer improvements in AFI and pain imply better daily functioning for many patients.
- Efficacy of a combination of FCHG49 glucosamine hydrochloride, TRH122 low molecular weight sodium chondroitin sulfate and manganese ascorbate in the management of knee osteoarthritis
PubMed ID: 10966840
Higher response rate (52% vs 28%) for combination including chondroitin suggests patient‑perceived benefit.
- [Structum (chondroitin sulfate)--a new agent for the treatment of osteoarthrosis]
PubMed ID: 10399232
Improved Lequesne index and sustained benefit after stopping suggest improved everyday function.
- [Anti-arthrosis treatments: efficacy and tolerance of chondroitin sulfates (CS 4&6)]
PubMed ID: 9856136
~50% improvement in Lequesne after 1 year indicates meaningful daily functional gains.
- Efficacy and tolerability of oral chondroitin sulfate as a symptomatic slow-acting drug for osteoarthritis (SYSADOA) in the treatment of knee osteoarthritis
PubMed ID: 9743817
6‑month RCT improved functional scores and walking time, consistent with improved daily activities.
- Efficacy and tolerability of chondroitin sulfate 1200 mg/day vs chondroitin sulfate 3 x 400 mg/day vs placebo
PubMed ID: 9743816
Lequesne Index improved significantly at 3 months — direct evidence for better daily function.
- Comparison of the antiinflammatory efficacy of chondroitin sulfate and diclofenac sodium in patients with knee osteoarthritis
PubMed ID: 8856618
Functional index improvements in knee OA trial indicate meaningful gains in daily activities.
- Efficacy and safety of piascledine 300 versus chondroitin sulfate in a 6 months treatment plus 2 months observation in patients with osteoarthritis of the knee
PubMed ID: 20179981
Substantial symptom and function gains over 6 months translate to improved daily function.
- Chondroitin sulfate efficacy versus celecoxib on knee osteoarthritis structural changes using magnetic resonance imaging: a 2-year multicentre exploratory study
PubMed ID: 27809891
Sustained symptom improvements over 24 months consistent with QoL benefit.
- Comparison of the efficacy and tolerability of chondroitin plus glucosamine and D-002 (beeswax alcohols) in subjects with osteoarthritis symptoms
PubMed ID: 28657529
Large WOMAC/function improvements indicate better daily activities performance.
- [Chondroitin sulfate in the treatment of gonarthrosis and coxarthrosis. 5-months result of a multicenter double-blind controlled prospective study using placebo]
PubMed ID: 1485136
RCT showed improved Lequesne pain-function index and reduced NSAID use, indicating better day-to-day function.
- Effectiveness of Non-Animal Chondroitin Sulfate Supplementation in the Treatment of Moderate Knee Osteoarthritis in a Group of Overweight Subjects: A Randomized, Double-Blind, Placebo-Controlled Pilot Study
PubMed ID: 31470599
TLKS and WOMAC improvements indicate better daily knee function in treated patients.
- A Randomized, Double-Blind, Placebo-Controlled, Prospective Clinical Trial Evaluating Water-Soluble Chicken Eggshell Membrane for Improvement in Joint Health in Adults with Knee Osteoarthritis
PubMed ID: 31381494
Functional improvements in more impaired subgroup translate into improved ADLs.
- Effect of an oral preparation containing hyaluronic acid, chondroitin sulfate, hydrolyzed collagen type II and hydrolyzed keratin on synovial fluid features and clinical indices in knee osteoarthritis. A pilot study
PubMed ID: 33213125
Short course oral supplement including chondroitin improved WOMAC and Lequesne functional scores.
- [Chondroprotector transdermal magnetophoresis for osteoarthritis of the knee]
PubMed ID: 32207707
Transdermal chondroxide improved pain and WOMAC function leading to better daily function.
- Treatment of knee osteoarthritis with a new formulation of a fixed-dose combination of glucosamine sulfate and bovine chondroitin: a multicenter, randomized, single-blind, non-inferiority clinical trial
PubMed ID: 33468249
Large multicenter trial with large functional gains (WOMAC total/function) and high responder rates.
- The effect of oral low molecular weight liquid hyaluronic acid combination with glucosamine and chondroitin on knee osteoarthritis patients with mild knee pain: An 8-week randomized double-blind placebo-controlled trial
PubMed ID: 33592868
WOMAC physical function and total improved significantly vs placebo.
- Oral supplementation with fish cartilage hydrolysate in an adult population suffering from knee pain and function discomfort: results from an innovative approach combining an exploratory clinical study and an ex vivo clinical investigation
PubMed ID: 37735385
KOOS global improved by ~19 points and VAS pain reductions indicate meaningful improvements in daily function.
- Cost-Effectiveness Analysis of Pharmaceutical-Grade Chondroitin Sulfate for Knee Osteoarthritis Based on Individual Patient Data from a Randomized Clinical Trial
PubMed ID: 39476307
Economic analysis from a large RCT showed prescription CS produced incremental QALY gains and was cost‑effective over six months.
- Nutrition supplementation combined with exercise versus exercise alone in treating knee osteoarthritis: a double-blinded, randomised, placebo-controlled trial
PubMed ID: 39982001
Higher MCID responder rates for WOMAC total and earlier improvements reflect better daily function with supplement + exercise.
- Bifidobacterium animalis subsp. lactis Probio-M8 enhances chondroitin efficacy for knee osteoarthritis in postmenopausal women via the gut-joint axis
PubMed ID: 41313018
Probiotic + CS improved WOMAC and inflammatory markers vs CS alone, supporting better patient‑reported outcomes and QoL.
- Pharmaceutical-grade chondroitin sulfate in the management of knee osteoarthritis
PubMed ID: 29451036
Review concluded pharmaceutical-grade chondroitin reduces pain and improves function, supporting daily activities.
- Effect of chondroitin sulphate on synovitis of knee osteoarthritic patients
PubMed ID: 28245911
Symptom and synovitis improvement translated into better pain/function outcomes vs acetaminophen.
- Pharmaceutical-grade Chondroitin sulfate is as effective as celecoxib and superior to placebo in symptomatic knee osteoarthritis: the ChONdroitin versus CElecoxib versus Placebo Trial (CONCEPT)
PubMed ID: 28533290
CONCEPT showed improved Lequesne Index (function) over 6 months, indicating better daily function in knee OA patients.
- The efficacy and safety of a combination of glucosamine hydrochloride, chondroitin sulfate and bio-curcumin with exercise in the treatment of knee osteoarthritis: a randomized, double-blind, placebo-controlled study
PubMed ID: 26937646
Combination product + exercise improved functional indices relevant to daily activities.
- Effectiveness of intra-articular injections of sodium hyaluronate-chondroitin sulfate in knee osteoarthritis: a multicenter prospective study
PubMed ID: 26577936
Substantial and durable pain reductions after IA HA+chondroitin likely translate to improved quality of life.
- Effects of N-acetyl glucosamine and chondroitin sulfate supplementation on knee pain and self-reported knee function in middle-aged and older Japanese adults: a randomized, double-blind, placebo-controlled trial
PubMed ID: 26178634
JKOM and household activity improvements reflect better daily functioning.
- Combined chondroitin sulfate and glucosamine for painful knee osteoarthritis: a multicentre, randomised, double-blind, non-inferiority trial versus celecoxib
PubMed ID: 25589511
WOMAC function improved comparably to celecoxib — supports improved daily activities.
- Combined glucosamine and chondroitin sulfate, once or three times daily, provides clinically relevant analgesia in knee osteoarthritis
PubMed ID: 25085275
Lequesne index and pain improvements support meaningful gains in daily function.
- Equivalence of a single dose (1200 mg) compared to a three-time a day dose (400 mg) of chondroitin 4&6 sulfate in patients with knee osteoarthritis. Results of a randomized double blind placebo controlled study
PubMed ID: 23059756
3-month knee OA RCT: improvements in Lequesne and VAS indicate better daily function with chondroitin.
- Chondroitin sulfate and/or glucosamine hydrochloride for Kashin-Beck disease: a cluster-randomized, placebo-controlled study
PubMed ID: 22469850
Kashin-Beck RCT: symptomatic and function improvements would be expected to improve QoL for affected patients.
- Symptomatic effects of chondroitin 4 and chondroitin 6 sulfate on hand osteoarthritis: a randomized, double-blind, placebo-controlled clinical trial at a single center
PubMed ID: 21898340
Hand OA RCT improved pain/function and morning stiffness — outcomes that commonly produce improvements in QoL.
- Effects of chondroitin sulfate and glucosamine in adult patients with Kaschin-Beck disease
PubMed ID: 20108108
Kaschin-Beck trial: structural preservation and symptom benefit would support maintained/improved QoL.
- Effectiveness of chondroitin sulphate in patients with concomitant knee osteoarthritis and psoriasis: a randomized, double-blind, placebo-controlled study
PubMed ID: 20399899
Knee OA RCT: significant symptom and function improvements (VAS, Lequesne) likely produced meaningful QoL improvements in patients with OA and psoriasis.
- Impact of chondroitin sulphate on health utility in patients with knee osteoarthritis: towards economic analysis
PubMed ID: 19900070
Direct analysis showing small improvements in health-utility index at 6 months attributable to chondroitin; supports improved QoL (modest and early).
- Long-term effects of chondroitins 4 and 6 sulfate on knee osteoarthritis: the study on osteoarthritis progression prevention, a two-year, randomized, double-blind, placebo-controlled trial
PubMed ID: 19180484
STOPP trial: chondroitin improved pain faster and slowed JSW loss; 19900070 economic analysis showed small early HUI gains — good evidence for modest QoL improvement early on.
- [Combined medication ARTRA in the treatment of osteoarthrosis]
PubMed ID: 16404866
Combination therapy significantly reduced pain and improved function and reduced NSAID reliance—likely to improve patient quality of life (combination evidence).
- Intermittent treatment of knee osteoarthritis with oral chondroitin sulfate: a one-year, randomized, double-blind, multicenter study versus placebo
PubMed ID: 15023378
Lequesne index improvements at one year reflect better daily functioning.
- [Long-term effects of structum administration (according to data from multicenter trial)]
PubMed ID: 14582441
Follow-up reported sustained symptomatic and functional benefits that translate to improved daily function in many patients.
- A randomized, double blind, placebo controlled trial of a topical cream containing glucosamine sulfate, chondroitin sulfate, and camphor for osteoarthritis of the knee
PubMed ID: 12610812
Topical formulation reduced pain and WOMAC symptoms, modestly supporting improved daily function.
Endurance (27)
- Oral supplementation with fish cartilage hydrolysate in an adult population suffering from knee pain and function discomfort: results from an innovative approach combining an exploratory clinical study and an ex vivo clinical investigation
PubMed ID: 37735385
Clinically meaningful reductions in pain and better KOOS scores imply improved ability to tolerate activity.
- Treatment of knee osteoarthritis with a new formulation of a fixed-dose combination of glucosamine sulfate and bovine chondroitin: a multicenter, randomized, single-blind, non-inferiority clinical trial
PubMed ID: 33468249
Sustained pain/function improvements and high responder rate imply greater activity tolerance over months.
- [Chondroprotector transdermal magnetophoresis for osteoarthritis of the knee]
PubMed ID: 32207707
Clinical functional improvements suggest increased tolerance for activity.
- A Randomized, Double-Blind, Placebo-Controlled, Prospective Clinical Trial Evaluating Water-Soluble Chicken Eggshell Membrane for Improvement in Joint Health in Adults with Knee Osteoarthritis
PubMed ID: 31381494
6MWT gains in a subset indicate improved activity tolerance in more impaired patients.
- Effectiveness of Non-Animal Chondroitin Sulfate Supplementation in the Treatment of Moderate Knee Osteoarthritis in a Group of Overweight Subjects: A Randomized, Double-Blind, Placebo-Controlled Pilot Study
PubMed ID: 31470599
TLKS functional gains and lower pain/inflammation plausibly increase activity tolerance.
- Pharmaceutical-grade Chondroitin sulfate is as effective as celecoxib and superior to placebo in symptomatic knee osteoarthritis: the ChONdroitin versus CElecoxib versus Placebo Trial (CONCEPT)
PubMed ID: 28533290
Function and pain improvements in CONCEPT can be expected to increase activity tolerance in knee OA patients.
- Glucosamine-containing supplement improves locomotor functions in subjects with knee pain: a randomized, double-blind, placebo-controlled study
PubMed ID: 26604721
Walking speed/strength improvements in subgroups would increase activity tolerance.
- Effects of N-acetyl glucosamine and chondroitin sulfate supplementation on knee pain and self-reported knee function in middle-aged and older Japanese adults: a randomized, double-blind, placebo-controlled trial
PubMed ID: 26178634
Increases in household physical activity reported with NAG+chondroitin vs placebo.
- Combined glucosamine and chondroitin sulfate, once or three times daily, provides clinically relevant analgesia in knee osteoarthritis
PubMed ID: 25085275
Large analgesic and function gains should allow greater tolerance for activity.
- Equivalence of a single dose (1200 mg) compared to a three-time a day dose (400 mg) of chondroitin 4&6 sulfate in patients with knee osteoarthritis. Results of a randomized double blind placebo controlled study
PubMed ID: 23059756
3-month trial improved Lequesne and VAS — symptomatic gains likely translate into increased activity tolerance.
- Chondroitin sulfate and/or glucosamine hydrochloride for Kashin-Beck disease: a cluster-randomized, placebo-controlled study
PubMed ID: 22469850
Kashin-Beck RCT: functional and symptomatic gains in treated groups support increased activity tolerance in that patient population.
- Symptomatic effects of chondroitin 4 and chondroitin 6 sulfate on hand osteoarthritis: a randomized, double-blind, placebo-controlled clinical trial at a single center
PubMed ID: 21898340
Hand OA RCT improved pain and function; these improvements likely support increased hand-use tolerance and daily activities.
- Effects of chondroitin sulfate and glucosamine in adult patients with Kaschin-Beck disease
PubMed ID: 20108108
JSW preservation and symptomatic improvements indicate improved capacity for activity over time.
- Evaluation of a therapeutic diet for feline degenerative joint disease
PubMed ID: 20337921
Cat study: objective accelerometry showed increased activity on the therapeutic diet containing chondroitin (and other ingredients) — direct evidence of increased activity though multi-ingredient and animal-specific.
- Effectiveness of chondroitin sulphate in patients with concomitant knee osteoarthritis and psoriasis: a randomized, double-blind, placebo-controlled study
PubMed ID: 20399899
Knee OA RCT: improvements in VAS and Lequesne function likely translate to increased ability to perform activities.
- Long-term effects of chondroitins 4 and 6 sulfate on knee osteoarthritis: the study on osteoarthritis progression prevention, a two-year, randomized, double-blind, placebo-controlled trial
PubMed ID: 19180484
STOPP: symptomatic improvement and structural preservation imply increased activity tolerance in knee OA patients.
- [Combined medication ARTRA in the treatment of osteoarthrosis]
PubMed ID: 16404866
Reduced pain and NSAID use with combination therapy likely enabled greater activity tolerance; chondroitin contribution cannot be isolated.
- Intermittent treatment of knee osteoarthritis with oral chondroitin sulfate: a one-year, randomized, double-blind, multicenter study versus placebo
PubMed ID: 15023378
Objective functional index improvements support greater activity tolerance, though direct endurance metrics were not reported.
- [Long-term effects of structum administration (according to data from multicenter trial)]
PubMed ID: 14582441
Sustained symptomatic benefit and reduced NSAID use suggest improved ability to remain active for months in many patients.
- [Results of the multicenter clinical trial of structum preparation in Russia]
PubMed ID: 11806217
Functional gains and less movement pain imply patients could tolerate more activity; activity tolerance was not directly measured.
- Efficacy and tolerability of oral chondroitin sulfate as a symptomatic slow-acting drug for osteoarthritis (SYSADOA) in the treatment of knee osteoarthritis
PubMed ID: 9743817
Walking time improvement and Lequesne gains indicate improved tolerance for activity.
- Effects of oral chondroitin sulfate on the progression of knee osteoarthritis: a pilot study
PubMed ID: 9743819
Increased mobility capacity over 1 year suggests better activity tolerance.
- Comparison of the antiinflammatory efficacy of chondroitin sulfate and diclofenac sodium in patients with knee osteoarthritis
PubMed ID: 8856618
Functional gains in OA trial imply increased tolerance for activity/exertion, though not directly measured as activity tolerance.
- [Chondroitin sulfate in the treatment of gonarthrosis and coxarthrosis. 5-months result of a multicenter double-blind controlled prospective study using placebo]
PubMed ID: 1485136
Reduced pain and improved function in the RCT imply greater ability to tolerate activity compared with placebo.
- Comparison of the efficacy and tolerability of chondroitin plus glucosamine and D-002 (beeswax alcohols) in subjects with osteoarthritis symptoms
PubMed ID: 28657529
Marked symptomatic and functional improvements support increased activity tolerance (inferred).
- [Combination therapy for exacerbations of pain in osteoarthritis with non-fixed combinations]
PubMed ID: 40561485
Marked functional improvements (walking speed, TUG) suggest increased tolerance for activity in the collagen+CS regimen.
- Nutrition supplementation combined with exercise versus exercise alone in treating knee osteoarthritis: a double-blinded, randomised, placebo-controlled trial
PubMed ID: 39982001
Earlier and larger gains in pain/function and strength with supplement + exercise would support greater activity tolerance.
Joints & tendons (26)
- Bone curvature changes can predict the impact of treatment on cartilage volume loss in knee osteoarthritis: data from a 2-year clinical trial
PubMed ID: 28339999
Post-hoc trial analysis demonstrated chondroitin reduced medial compartment cartilage volume loss in specific bone-shape subgroups over 2 years.
- Levels of serum biomarkers from a two-year multicentre trial are associated with treatment response on knee osteoarthritis cartilage loss as assessed by magnetic resonance imaging: an exploratory study
PubMed ID: 28728606
Exploratory biomarker analysis identified baseline profiles linked to cartilage-preserving response to chondroitin — supports cartilage support in responders.
- Efficacy of an oral hyaluronate and collagen supplement as a preventive treatment of elbow dysplasia
PubMed ID: 25234322
Young Labrador supplement (including chondroitin) reduced elbow dysplasia incidence radiographically—supports cartilage/joint structural protection in growing dogs.
- Glucosamine and chondroitin for knee osteoarthritis: a double-blind randomised placebo-controlled clinical trial evaluating single and combination regimens
PubMed ID: 24395557
Large 2‑year RCT: glucosamine+chondroitin modestly but significantly slowed joint‑space narrowing (structural cartilage preservation).
- Equivalence of a single dose (1200 mg) compared to a three-time a day dose (400 mg) of chondroitin 4&6 sulfate in patients with knee osteoarthritis. Results of a randomized double blind placebo controlled study
PubMed ID: 23059756
3-month knee OA trial showed symptomatic improvement vs placebo; short-term structural impact not measured but clinical benefits support cartilage-support hypothesis.
- Chondroitin sulfate and/or glucosamine hydrochloride for Kashin-Beck disease: a cluster-randomized, placebo-controlled study
PubMed ID: 22469850
Kashin-Beck RCT: chondroitin (alone and with glucosamine) improved WOMAC total/stiffness and reduced pain responders — combined clinical and some structural suggestion for cartilage support.
- Chondroitin sulphate reduces both cartilage volume loss and bone marrow lesions in knee osteoarthritis patients starting as early as 6 months after initiation of therapy: a randomised, double-blind, placebo-controlled pilot study using MRI
PubMed ID: 21367761
MRI trial: chondroitin significantly slowed cartilage volume loss at 6 and 12 months — direct imaging evidence for slowed cartilage wear.
- Effects of chondroitin sulfate and glucosamine in adult patients with Kaschin-Beck disease
PubMed ID: 20108108
Kaschin-Beck randomized trial: chondroitin+glucosamine prevented JSW narrowing over 8 months — direct evidence of slowed cartilage wear.
- Effectiveness of chondroitin sulphate in patients with concomitant knee osteoarthritis and psoriasis: a randomized, double-blind, placebo-controlled study
PubMed ID: 20399899
Knee OA RCT: symptomatic and functional improvements imply positive effects on joint connective tissues; not directly measured but supportive clinically.
- Long-term effects of chondroitins 4 and 6 sulfate on knee osteoarthritis: the study on osteoarthritis progression prevention, a two-year, randomized, double-blind, placebo-controlled trial
PubMed ID: 19180484
STOPP RCT: chondroitin reduced proportion of patients with JSW loss ≥0.25 mm over 2 years (33% RRR) — strong evidence for slowed cartilage wear.
- Chondroitins 4 and 6 sulfate in osteoarthritis of the knee: a randomized, controlled trial
PubMed ID: 15751094
Two-year study showed statistically significant prevention of JSW loss despite no symptomatic change.
- Intermittent treatment of knee osteoarthritis with oral chondroitin sulfate: a one-year, randomized, double-blind, multicenter study versus placebo
PubMed ID: 15023378
One-year RCT prevented joint-space narrowing, a marker of cartilage preservation.
- Use of a resorbable hydroxyapatite-collagen chondroitin sulfate material on immediate postextraction sites: a clinical and histologic study
PubMed ID: 12956481
A biomaterial containing chondroitin improved bone‑like tissue formation in implant sites, supporting a role in connective tissue healing (local, device context).
- [Radiological progression of internal femoro-tibial osteoarthritis in gonarthrosis. Chondro-protective effect of chondroitin sulfates ACS4-ACS6]
PubMed ID: 12375395
Robust DBPC evidence of preserved cartilage thickness/surface area and joint-space width over 2 years indicates direct cartilage‑supporting effects.
- Systems to assess the progression of finger joint osteoarthritis and the effects of disease modifying osteoarthritis drugs
PubMed ID: 12111630
Three-year radiographic trials in finger OA showed less anatomical lesion progression and fewer erosive events with chondroitin.
- [Anti-arthrosis treatments: efficacy and tolerance of chondroitin sulfates (CS 4&6)]
PubMed ID: 9856136
Radiographic interarticular‑space improvement after 1 year consistent with cartilage‑protective effect.
- Chondroitin sulfate: S/DMOAD (structure/disease modifying anti-osteoarthritis drug) in the treatment of finger joint OA
PubMed ID: 9743818
3‑year trial reduced new erosive finger‑OA changes — evidence of slowed structural deterioration.
- Effects of oral chondroitin sulfate on the progression of knee osteoarthritis: a pilot study
PubMed ID: 9743819
Stabilization of joint space and biochemical markers over 1 year suggests support/protection of cartilage.
- Chondroitin sulfate efficacy versus celecoxib on knee osteoarthritis structural changes using magnetic resonance imaging: a 2-year multicentre exploratory study
PubMed ID: 27809891
Primary structural outcome: chondroitin reduced medial cartilage volume loss over 24 months (MRI evidence).
- Oral supplementation with fish cartilage hydrolysate in an adult population suffering from knee pain and function discomfort: results from an innovative approach combining an exploratory clinical study and an ex vivo clinical investigation
PubMed ID: 37735385
Clinical symptom improvements plus ex‑vivo reduction of catabolic cartilage responses indicate supportive effects on cartilage biology.
- Treatment of knee osteoarthritis with a new formulation of a fixed-dose combination of glucosamine sulfate and bovine chondroitin: a multicenter, randomized, single-blind, non-inferiority clinical trial
PubMed ID: 33468249
Large RCT of GS+CS with robust symptom/function benefits consistent with cartilage‑support claims (clinical evidence).
- Differences in Serum Biomarkers Between Combined Glucosamine and Chondroitin Versus Celecoxib in a Randomized, Double-blind Trial in Osteoarthritis Patients
PubMed ID: 30648524
Systemic IL‑6 lowering by glucosamine+chondroitin suggests biological plausibility for cartilage protection.
- Effect of an oral preparation containing hyaluronic acid, chondroitin sulfate, hydrolyzed collagen type II and hydrolyzed keratin on synovial fluid features and clinical indices in knee osteoarthritis. A pilot study
PubMed ID: 33213125
Local synovial anti‑inflammatory changes and symptom improvement after multi‑ingredient supplement including chondroitin — supportive of cartilage environment.
- [The effectiveness of complex therapy using the injectable form of chondroitin sulfate and sodium hyaluronate with osteoarthritis of the knee joint]
PubMed ID: 32598683
Injectable chondroitin showed clinically meaningful pain reductions when used for knee OA — indirect support for cartilage symptom management.
- Novel Hydrolyzed Chicken Sternal Cartilage Extract Improves Facial Epidermis and Connective Tissue in Healthy Adult Females: A Randomized, Double-Blind, Placebo-Controlled Trial
PubMed ID: 31221944
Collagen product containing chondroitin improved skin collagen and elasticity — supports connective tissue outcomes (non‑joint).
- Effectiveness of Non-Animal Chondroitin Sulfate Supplementation in the Treatment of Moderate Knee Osteoarthritis in a Group of Overweight Subjects: A Randomized, Double-Blind, Placebo-Controlled Pilot Study
PubMed ID: 31470599
Clinical improvement plus reduction in inflammatory markers supports potential cartilage protective effects.
Swelling relief (7)
- Differences in Serum Biomarkers Between Combined Glucosamine and Chondroitin Versus Celecoxib in a Randomized, Double-blind Trial in Osteoarthritis Patients
PubMed ID: 30648524
Glucosamine+chondroitin lowered systemic IL‑6 (biomarker of inflammation) — plausible reduction in swelling.
- Potential effects of chondroitin sulfate on joint swelling: a GAIT report
PubMed ID: 18768335
GAIT trial analysis showed a statistically significant reduction in clinician-assessed knee joint swelling with chondroitin sulfate vs placebo.
- Efficacy of an oral hyaluronate and collagen supplement as a preventive treatment of elbow dysplasia
PubMed ID: 25234322
Canine RCT with multi-ingredient (includes chondroitin) showed reduced swelling vs control (radiographic/clinical swelling outcomes).
- Effects of glucosamine-chondroitin combination on synovial fluid IL-1β, IL-6, TNF-α and PGE2 levels in internal derangements of temporomandibular joint
PubMed ID: 25662545
TMJ trial: glucosamine–chondroitin reduced PGE2 (inflammatory mediator) and improved mouth opening, implying reduced local inflammatory swelling.
- Effect of chondroitin sulphate on synovitis of knee osteoarthritic patients
PubMed ID: 28245911
Randomized trial showed ~50% reduction in synovitis (ultrasound) with oral chondroitin vs acetaminophen — direct evidence of reduced joint swelling.
- Effectiveness of Non-Animal Chondroitin Sulfate Supplementation in the Treatment of Moderate Knee Osteoarthritis in a Group of Overweight Subjects: A Randomized, Double-Blind, Placebo-Controlled Pilot Study
PubMed ID: 31470599
Oral chondroitin reduced CRP/ESR vs placebo — direct anti‑inflammatory signal consistent with less swelling.
- Effect of an oral preparation containing hyaluronic acid, chondroitin sulfate, hydrolyzed collagen type II and hydrolyzed keratin on synovial fluid features and clinical indices in knee osteoarthritis. A pilot study
PubMed ID: 33213125
Synovial fluid IL‑6/IL‑8 reductions after multi‑ingredient oral supplement containing chondroitin — local anti‑inflammatory effect.
Exercise recovery (4)
- [Chondroprotector transdermal magnetophoresis for osteoarthritis of the knee]
PubMed ID: 32207707
Functional and pain improvements with transdermal chondroprotective therapy may improve post‑activity recovery.
- Nutrition supplementation combined with exercise versus exercise alone in treating knee osteoarthritis: a double-blinded, randomised, placebo-controlled trial
PubMed ID: 39982001
Supplement + exercise group experienced earlier symptom and function improvements, implying faster recovery/adaptation to activity.
- The efficacy and safety of a combination of glucosamine hydrochloride, chondroitin sulfate and bio-curcumin with exercise in the treatment of knee osteoarthritis: a randomized, double-blind, placebo-controlled study
PubMed ID: 26937646
Supplement + exercise reduced movement‑related pain, which could permit faster recovery between activities.
- A Randomized, Double-Blind, Placebo-Controlled, Prospective Clinical Trial Evaluating Water-Soluble Chicken Eggshell Membrane for Improvement in Joint Health in Adults with Knee Osteoarthritis
PubMed ID: 31381494
Early stiffness relief and improved walking in impaired subgroup suggests faster symptomatic recovery after activity for some patients.
Similar by evidence
Supplements the same benefits carry qualifying findings for — a fact about the evidence graph, not a recommendation to swap.
Products with Chondroitin
Search all81 products whose verified label declares Chondroitin — not every bottle that mentions it in a title.
Being studied right now
Recruiting clinical trials registered on ClinicalTrials.gov. A trial in progress has no result yet — this is what the field is asking, not what it found.