Cod Liver Oil
10 benefits mapped to clinical evidence across supplements.
Dose per serving from products
138 products in our catalogue print how much Cod Liver Oil a serving holds.
Most common: 250 mg to 500 mg, 38% of 138 products.
| Dose per serving | Products |
|---|---|
| 250 mg or less | 4 |
| 250 mg to 500 mg | 52 |
| 500 mg to 1 g | 35 |
| 1 g to 2.5 g | 24 |
| 2.5 g to 5 g | 23 |
Dose per serving from research
12 study groups in 8 studies say how much Cod Liver Oil participants took a day.
These are the doses the studies gave. They are not a recommendation.
Most common: 10 mL to 25 mL, 42% of 12 study groups.
| Daily dose | Study groups |
|---|---|
| 2.5 mL or less | 1 |
| 2.5 mL to 5 mL | 1 |
| 5 mL to 10 mL | 3 |
| 10 mL to 25 mL | 5 |
| 25 mL to 50 mL | 2 |
Benefit Evidence
Pregnancy DHA up +4.1
Glucose/inflammation down, complications reduced
Umbilical DHA +23%
Omega-3â; triglyceridesâ
HDLâ 7%; TGâ
Platelet aggregationâ; cholesterolâ
Pregnancy DHA up +4.1
Glucose/inflammation down, complications reduced
Umbilical DHA +23%
Omega-3â; triglyceridesâ
HDLâ 7%; TGâ
Platelet aggregationâ; cholesterolâ
Research sources
Pregnancy support (4)
- Supplementation of n-3 fatty acids during pregnancy and lactation reduces maternal plasma lipid levels and provides DHA to the infants
PubMed ID: 16923694
Randomized trial showed increased maternal and infant DHA and moderated pregnancy triglyceride riseâstrong pregnancyârelevant biochemical effects.
- Maternal supplementation with very-long-chain n-3 fatty acids during pregnancy and lactation augments children's IQ at 4 years of age
PubMed ID: 12509593
Maternal codâliver oil improved child cognitive outcome at 4 years, a downstream pregnancy/lactation benefit.
- Similar effects on infants of n-3 and n-6 fatty acids supplementation to pregnant and lactating women
PubMed ID: 11694666
Higher umbilical DHA associated with longer gestation and more mature neonatal EEGsâbeneficial perinatal associations.
- Cod-Liver Oil Improves Metabolic Indices and hs-CRP Levels in Gestational Diabetes Mellitus Patients: A Double-Blind Randomized Controlled Trial
PubMed ID: 31956660
Large randomized trial in women with gestational diabetes showing improved glucose, HOMAâIR, hsâCRP and reduced some complications â strong, direct support.
Inflammation (4)
- Effects of short-term oral administration of dietary marine oils in patients with inflammatory bowel disease and joint pain: a pilot study comparing seal oil and cod liver oil
PubMed ID: 18374458
Twoâweek study reduced leukotriene B4 and AA/EPA ratios and tended to improve joint painâsupporting antiâinflammatory action.
- Effect of marine oils supplementation on coagulation and cellular activation in whole blood
PubMed ID: 8614301
Supplementation reduced LPSâinduced monocyte tissue factor activity and lowered triglyceridesâantiâinflammatory and antithrombotic signals.
- Divergent anti-inflammatory effects of different oil acute consumption on healthy individuals
PubMed ID: 21326271
Singleâmeal codâliver oil rapidly lowered TNFâα and ICAMâ1âclear shortâterm antiâinflammatory biomarker effects.
- Cod-Liver Oil Improves Metabolic Indices and hs-CRP Levels in Gestational Diabetes Mellitus Patients: A Double-Blind Randomized Controlled Trial
PubMed ID: 31956660
Direct evidence: codâliver oil decreased hsâCRP and markers of insulin resistance in a large RCT in gestational diabetes.
Brain health (2)
- Maternal supplementation with very-long-chain n-3 fatty acids during pregnancy and lactation augments children's IQ at 4 years of age
PubMed ID: 12509593
Maternal supplementation produced measurable improvement in child mental processing (IQ) at 4 years, supporting early brain development.
- Supplementation of n-3 fatty acids during pregnancy and lactation reduces maternal plasma lipid levels and provides DHA to the infants
PubMed ID: 16923694
Increased maternal and newborn DHA levels likely support infant brain development; clinical neurodevelopment endpoints were favorable biologically.
Heart health (2)
- A long-term seal- and cod-liver-oil supplementation in hypercholesterolemic subjects
PubMed ID: 11214732
Longâterm CLO reduced platelet aggregation and increased blood omegaâ3sâmechanistically beneficial for heart health.
- Effect of marine oils supplementation on coagulation and cellular activation in whole blood
PubMed ID: 8614301
Raised HDL, reduced triglycerides and inflammatory/coagulation activation markers relevant to cardiovascular health.
Wellbeing (1)
- Cod-Liver Oil Improves Metabolic Indices and hs-CRP Levels in Gestational Diabetes Mellitus Patients: A Double-Blind Randomized Controlled Trial
PubMed ID: 31956660
Large RCT in pregnancy showing improved glucose, inflammation and fewer complications â meaningful clinical wellbeing signal in that population.
Cholesterol (1)
- Effect of marine oils supplementation on coagulation and cellular activation in whole blood
PubMed ID: 8614301
Seal/codâliver oil modestly raised HDL and lowered triglycerides in healthy adults (favorable lipid effects).
Healthy aging (1)
- Effect of marine oils supplementation on coagulation and cellular activation in whole blood
PubMed ID: 8614301
Supplementation raised HDL, lowered triglycerides and reduced inflammatory/coagulation markers relevant to healthy aging/CVD risk.
Joint comfort (1)
- Cod liver oil (n-3 fatty acids) as an non-steroidal anti-inflammatory drug sparing agent in rheumatoid arthritis
PubMed ID: 18362100
Randomized trial in RA showed a clinically meaningful NSAIDâsparing effect with codâliver oil.
Mental clarity (1)
- Maternal supplementation with very-long-chain n-3 fatty acids during pregnancy and lactation augments children's IQ at 4 years of age
PubMed ID: 12509593
Randomized maternal supplementation associated with ~4âpoint higher child mental processing (IQ) at age 4.
Immune support (1)
- [Interventional effect of vitamin A supplementation on re-vaccination to hepatitis B virus among rural infants and young children in China]
PubMed ID: 21624240
RCT in children showed large increase in vaccine antibody titers after codâliver oil (vitamin Aârich) supplementation.
Similar by evidence
Supplements the same benefits carry qualifying findings for â a fact about the evidence graph, not a recommendation to swap.
Products with Cod Liver Oil
Search all158 products whose verified label declares Cod Liver Oil â not every bottle that mentions it in a title.