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Sulforaphane: study protocols

17 study groups say how much Sulforaphane participants took a day. These are the doses the studies gave. They are not a recommendation.

Sulforaphane: what the research found →

Dose per serving from products

49 products in our catalogue print how much Sulforaphane a serving holds.

Most common: 250 mcg to 500 mcg, 16% of 49 products.

Dose per servingProducts
50 mcg or less
2
50 mcg to 100 mcg
2
100 mcg to 250 mcg
6
250 mcg to 500 mcg
8
500 mcg to 1 mg
6
1 mg to 2.5 mg
5
2.5 mg to 5 mg
2
5 mg to 10 mg
1
10 mg to 25 mg
7
25 mg to 50 mg
3
50 mg to 100 mg
4
100 mg to 250 mg
1
over 250 mg
2

Dose per serving from research

17 study groups in 11 studies say how much Sulforaphane participants took a day.

These are the doses the studies gave. They are not a recommendation.

Most common: 25 mg to 50 mg, 35% of 17 study groups.

Daily doseStudy groups
1 mg to 2.5 mg
2
2.5 mg to 5 mg
0
5 mg to 10 mg
0
10 mg to 25 mg
0
25 mg to 50 mg
6
50 mg to 100 mg
5
100 mg to 250 mg
0
250 mg to 500 mg
0
500 mg to 1 g
3
over 1 g
1

Commonly used together

1 of 17 study groups took Sulforaphane with something else, but nothing that 3 or more different studies gave.

17 study groups

Study
A Phase 1 Randomized, Placebo-Controlled Study Evaluating the Safety, Tolerability, and Pharmacokinetics of Enteric-Coated Stabilized Sulforaphane (SFX-01) in Male Participants
2025 · Cohort 1: SFX-01 300 mg QD · Healthy males aged 18–55 years
46.2 mg7 days6
A Phase 1 Randomized, Placebo-Controlled Study Evaluating the Safety, Tolerability, and Pharmacokinetics of Enteric-Coated Stabilized Sulforaphane (SFX-01) in Male Participants
2025 · Cohort 2: SFX-01 300 mg BID · Healthy males aged 18–55 years
92.4 mg7 days6
A Phase 1 Randomized, Placebo-Controlled Study Evaluating the Safety, Tolerability, and Pharmacokinetics of Enteric-Coated Stabilized Sulforaphane (SFX-01) in Male Participants
2025 · Cohort 3: SFX-01 600 mg QD · Healthy males aged 18–55 years
92.4 mg7 days6
Efficacy and Safety of Sulforaphane Added to Antipsychotics for the Treatment of Negative Symptoms of Schizophrenia: A Randomized Controlled Trial
2025 · sulforaphane · Patients with schizophrenia receiving antipsychotics
1.7 g24 weeks53
Brain Training and Sulforaphane Intake Interventions Separately Improve Cognitive Performance in Healthy Older Adults, Whereas a Combination of These Interventions Does Not Have More Beneficial Effects: Evidence from a Randomized Controlled Trial
2021 · BT-S group · Healthy adults aged 60–80 years
30 mg12 weeks36
Brain Training and Sulforaphane Intake Interventions Separately Improve Cognitive Performance in Healthy Older Adults, Whereas a Combination of These Interventions Does Not Have More Beneficial Effects: Evidence from a Randomized Controlled Trial
2021 · AT-S group · Healthy adults aged 60–80 years
30 mg12 weeks36
Sulforaphane Adjunct to Methylphenidate for Attention-deficit/Hyperactivity Disorder: A Randomized, Double-blind, Placebo-controlled Trial
2025 · Sulforaphane group · Children aged 6–11 with ADHD
30 mg8 weeks35
Accumulation of Sulforaphane and Alliin in Human Prostate Tissue
2022 · BroccoMax/GRN plus placebo · Men aged 18–80 with BMI 19.5–35 kg/m² awaiting trans-perineal prostate biopsy, including men with suspected or diagnosed prostate cancer
530 mg4 weeks—
Improving insulin resistance by sulforaphane via activating the Bacteroides and Lactobacillus SCFAs-GPR-GLP1 signal axis
2024 · broccoli seed tablet intervention group · NAFLD patients with abnormal glucose; age and sex not reported
42 mg12 weeks36
The Effects of Broccoli Sprout Extract Containing Sulforaphane on Lipid Peroxidation and Helicobacter pylori Infection in the Gastric Mucosa
2015 · H. pylori-positive BSES group (group A) · Adults with functional dyspepsia and H. pylori infection
2 mg4 weeks33
The Effects of Broccoli Sprout Extract Containing Sulforaphane on Lipid Peroxidation and Helicobacter pylori Infection in the Gastric Mucosa
2015 · H. pylori-negative BSES group (group C) · Adults with functional dyspepsia without H. pylori infection
2 mg4 weeks28
Sulforaphane is not an effective antagonist of the human pregnane X-receptor in vivo
2013 · Powdered extract containing ~450 µmoles of SFN + cheese soup · Healthy adults aged 20–34 years; men and women
80 mg7 days23
Sulforaphane is not an effective antagonist of the human pregnane X-receptor in vivo
2013 · SFN + cheese soup and 300 mg RIF once daily for 7 days · Healthy adults aged 20–34 years; men and women
80 mg7 days23
Oral chronic sulforaphane effects on heavy resistance exercise: Implications for inflammatory and muscle damage parameters in young practitioners
2021 · sulforaphane · healthy young men, mean age 22.0 years
30 mg4 weeks10
Effect of Sulforaphane in Men with Biochemical Recurrence after Radical Prostatectomy
2015 · sulforaphane group · Men, mean age 69 years, with biochemical recurrence shown by increasing PSA levels after radical prostatectomy
60 mg26 weeks—
Evaluation of 2-Thiothiazolidine-4-Carboxylic Acid, a Common Metabolite of Isothiocyanates, as a Potential Biomarker of Cruciferous Vegetable Intake
2019 · Sulforaphane-rich (SFR) beverage · 50 healthy volunteers from a farming community in Qidong, China; age and sex not specified
740 mg7 days—
Accumulation of Sulforaphane and Alliin in Human Prostate Tissue
2022 · BroccoMax/GRN plus alliin (Kwai) · Men aged 18–80 with BMI 19.5–35 kg/m² awaiting trans-perineal prostate biopsy, including men with suspected or diagnosed prostate cancer
530 mg4 weeks—
Sulforaphane: study protocols | supp.fit