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Supplement

Sulforaphane (broccoli sprout extract)

Activates NRF2-linked antioxidant response elements.[2108,3319,3345, etc.]

Superscript reference numbers link to the Sources bibliography.

Strong Evidence
LongevityDetox SupportMetabolic Healthalias: broccoli sprout

Composite Rating

4.0/5

Blends evidence depth, community direction, safety friction, and completeness.

Evidence Intensity

100/100

High depth from human/RCT/meta counts

Community Direction

53

Positive Lean • confidence Low

Safety Friction

100/100

High signal from adverse/interaction markers

Data Completeness

100%

Studies 15 • mentions 7 • links 26

Not medical advice. This product is for educational and informational purposes only. It does not diagnose, treat, cure, or prevent any disease and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of a qualified healthcare provider with any questions regarding a medical condition.

FDA disclaimer: These statements have not been evaluated by the Food and Drug Administration. Dietary supplements are not intended to diagnose, treat, cure, or prevent any disease. Results may vary. Not intended for use by pregnant or nursing women, individuals under 18, or those with known medical conditions without physician consultation.

If you are experiencing a medical emergency, call 911 or your local emergency number immediately.

Implementation Blueprint

Goal alignment: Longevity, Detox Support, Metabolic Health.[36,93,409, etc.]

Dose guide: 10-40 mg active sulforaphane/day.[36,93,409, etc.]

Category: botanical.[36,93,409, etc.]

Category

Botanical

Evidence Tier

HIGH

Daily Guide

10-40 mg active sulforaphane/day

Dosing Guide

10-40 mg active sulforaphane/day[2108,3319,3345, etc.]

At-A-Glance Evidence Architecture[2108,3319,3345, etc.]

Clinical Depth

Humans: 237 • RCTs: 25 • Meta: 4

Cohort / Real-World

Cohort signals: 0

Safety Markers

Adverse signals: 397 • Interactions: 279

Evidence Tracking

Freshness, trend, and study timeline for this item

Evidence Tracking

Status

New Evidence

Trend

→ Stable evidence base

Depth

409 total studies · 4 recent

Timeline

20122025

Top Signal Metrics[2108,3319,3345, etc.]

In vitro / tissue

838

Animal-only studies

810

Total indexed

409

Safety adverse signals

397

Interaction signals

279

Human studies

237

Community Direction Mix[36,93,409, etc.]

Weighted direction score: 53 (Positive Lean)

Benefit5 (71%)

Evidence Quality Summary[2108,3319,3345, etc.]

High when >=2 human meta-analyses, or >=5 human RCTs with substantial human literature volume.

In vitro / tissue

838

Animal-only studies

810

Total indexed

409

Safety adverse signals

397

Interaction signals

279

Human studies

237

Randomized trials

25

Meta-analyses

4

Study Type Breakdown

Distribution of evidence by study design strength

Meta-AnalysesLevel 1a4
Randomized TrialsLevel 1b25
Human Studies (other)Level 3-4208
All IndexedAll levels409
100

Evidence Strength: High

Composite of study volume, RCTs, and meta-analyses

Top Human Studies[2108,3319,3345, etc.]

PMID 35246237 • 2022 Mar 4

Pharmacological and dietary-supplement treatments for autism spectrum disorder: a systematic review and network meta-analysis.

Mol Autism

Open PubMed

PMID 37023957 • 2023 Jun 1

Sulforaphane exhibits potent renoprotective effects in preclinical models of kidney diseases: A systematic review and meta-analysis.

Life Sci

Open PubMed

PMID 41275316 • 2025 Nov 22

Investigating the clinical efficacy, safety and molecular mechanism of sulforaphane in autism spectrum disorder: an integrated study combining meta-analysis, network pharmacology, and computational biology.

Community Report Frequency[36,93,409, etc.]

Benefit reports: 5

Adverse reports: 1

No-effect reports: 0

Mixed reports: 1

Unclear reports: 0

Signal confidence: 0.29

Top Reported Effects[36,93,409, etc.]

Benefits

  • effective: 2
  • sleep: 1
  • energy: 1

Adverse

  • Those with severe iodine deficiency (supplement iodine alongside): 1

No Effect

  • insufficient no-effect reports captured: 0

Users care strongly about active vs precursor dose transparency. | Step2: Moderate positive empirical signal; apply a light priority boost.

Reddit evidence: 3 mentions (confidence 0.29) across Biohackers, ketoscience, Supplements.

Amazon signal: 0 products scanned (confidence 0.00).

GNC signal: 0 products scanned (confidence 0.00) [BLOCKED].

Community Evidence Examples[36,93,409, etc.]

post • r/Biohackers • benefit

[EU/FR] The "Hard Detox" Budget Stack: 3g NAC + Activated Sulforaphane for <€20/mo (Protocol) Hi everyone, I’ve been refining a "Phase II" liver detox and longevity stack for a while. My goal was to hit clinical dosages (e.g., 3g daily NAC…

Open mention

post • r/Biohackers • benefit

Best way to make sulforaphane supplements? Hey squad, I've been making some sulforaphane supplements at home from broccoli sprouts and ground mustard seed so there's myrosinase to convert glucoraphanin into sulforaphane. I've done two batc…

Open mention

post • r/ketoscience • unclear

Sulforaphane and Brain Health: From Pathways of Action to Effects on Specific Disorders (2025)

Retail Signal Examples

amazon

Amazon search for Sulforaphane (broccoli sprout extract)

Rating: n/a | Reviews: n/a

Open product

Primary Source Links

Evidence Sources

  • https://eutils.ncbi.nlm.nih.gov/entrez/eutils/esearch.fcgi?db=pubmed&term=(%22sulforaphane%22)%20AND%20(supplement*%5BTitle%2FAbstract%5D%20OR%20supplementation%5BTitle%2FAbstract%5D%20OR%20intake%5BTitle%2FAbstract%5D%20OR%20dietary%20supplements%5BMeSH%20Terms%5D)
  • https://eutils.ncbi.nlm.nih.gov/entrez/eutils/esearch.fcgi?db=pubmed&term=(%22sulforaphane%22)%20AND%20humans%5BMeSH%20Terms%5D%20AND%20(supplement*%5BTitle%2FAbstract%5D%20OR%20supplementation%5BTitle%2FAbstract%5D%20OR%20intake%5BTitle%2FAbstract%5D%20OR%20dietary%20supplements%5BMeSH%20Terms%5D)
  • https://eutils.ncbi.nlm.nih.gov/entrez/eutils/esearch.fcgi?db=pubmed&term=(%22sulforaphane%22)%20AND%20animals%5BMeSH%20Terms%5D%20NOT%20humans%5BMeSH%20Terms%5D

Scientific Evidence Notes[2108,3319,3345, etc.]

1. Sulforaphane and detoxification biomarkers

RCT • 2021 • Adults

Small human intervention studies.

Outcome: Increases phase II detox marker activity.[2108,3319,3345, etc.]

2. PubMed evidence summary: Sulforaphane

PUBMED • Humans + preclinical triage

Counts aggregated from automated literature sweep and tiering rules.

Outcome: Tier HIGH; humans 237, RCTs 25, meta-analyses 4.[2108,3319,3345, etc.]

Open source

Safety and Pitfalls

  • Dose standardization varies by product[36,93,409, etc.]
  • Potential side effect: bloating[36,93,409, etc.]
  • Potential side effect: GI discomfort[36,93,409, etc.]
  • Use caution with condition: hypothyroidism (high-dose caution)[36,93,409, etc.]
  • Legacy caution group: Those with severe iodine deficiency (supplement iodine alongside)[36,93,409, etc.]
Adverse1 (14%)
No Effect0 (0%)
Mixed1 (14%)

BMC Pharmacol Toxicol

Open PubMed

PMID 31280187 • 2019 Jul-Aug

Chemoprevention of Breast Cancer With Vitamins and Micronutrients: A Concise Review.

In Vivo

Open PubMed

PMID 40041932 • 2025 Jun 2

Randomized Phase II Clinical Trial of Sulforaphane in Former Smokers at High Risk for Lung Cancer.

Cancer Prev Res (Phila)

Open PubMed

PMID 31155953 • 2020

Sulforaphane Bioavailability and Chemopreventive Activity in Men Presenting for Biopsy of the Prostate Gland: A Randomized Controlled Trial.

Nutr Cancer

Open PubMed

PMID 36014767 • 2022 Aug 10

Accumulation of Sulforaphane and Alliin in Human Prostate Tissue.

Nutrients

Open PubMed

PMID 33503851 • 2021 Jan 25

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.

Nutrients

Open PubMed

PMID 22537070 • 2012 Nov

Effect of broccoli sprouts on insulin resistance in type 2 diabetic patients: a randomized double-blind clinical trial.

Int J Food Sci Nutr

Open PubMed

PMID 37619675 • 2024 Jan

Sulforaphane Supplementation Did Not Modulate NRF2 and NF-kB mRNA Expressions in Hemodialysis Patients.

J Ren Nutr

Open PubMed

PMID 35934064 • 2022 Nov

Histone Deacetylase Inhibition by Gut Microbe-Generated Short-Chain Fatty Acids Entrains Intestinal Epithelial Circadian Rhythms.

Gastroenterology

Open PubMed

PMID 33207780 • 2020 Nov 16

Efficacy of Sulforaphane in Neurodegenerative Diseases.

Int J Mol Sci

Open PubMed

PMID 33003518 • 2020 Sep 29

Dietary Factors and Supplements Influencing Prostate Specific-Antigen (PSA) Concentrations in Men with Prostate Cancer and Increased Cancer Risk: An Evidence Analysis Review Based on Randomized Controlled Trials.

Nutrients

Open PubMed

PMID 36915952 • 2023

A Review on Autism Spectrum Disorder: Pathogenesis, Biomarkers, Pharmacological and Non-Pharmacological Interventions.

CNS Neurol Disord Drug Targets

Open PubMed

PMID 38612798 • 2024 Apr 3

Do Brassica Vegetables Affect Thyroid Function?-A Comprehensive Systematic Review.

Int J Mol Sci

Open PubMed

PerimeterX / captcha block encountered.

Use adverse/interactions PubMed signal counts for screening; perform clinician review before high-dose or multi-drug stack use.

Imported legacy community score: 8.0/10 (heuristic mapping confidence 1.00).

Imported legacy monthly cost signal: ~$22.00.

Legacy community note: Rapidly growing appreciation. Dr. Rhonda Patrick has popularized sulforaphane extensively. Growing broccoli sprouts at home is popular in health community. Supplement standardization is improving.

Open mention

post • r/Supplements • unclear

Reminder that you need fruits and veggies daily to get flavonoids that prevent cancer, diabetes, cardiovascular disease, etc. — because there are thousands of them in a fruit It is not wise to choose flavonoid supplements or “extracted” po…

Open mention

post • r/Supplements • unclear

Bryan Johnson's Supplement Lis # Bryan Johnson's Supplement List I just finished a writeup on Bryan Johnson's Supplement stack and figured I would share here for anyone interested. [**This full list with more information**](https://jakesjo…

Open mention

post • r/Biohackers • unclear

anyone got any tips on how to eat broccoli sprouts without throwing up About a year ago I bought broccoli seeds and mustard seeds to ground up and mix with the spouts for the sulforaphane, but I wasn't prepared for how much i would hate th…

Open mention

post • r/Biohackers • unclear

Sulforaphane? Anyone here taking this as a supplement or in food form ? Opinions?

Open mention

comment • r/Biohackers • unclear

Ask it if combining sulforaphane and NAC cancel each other out

Open mention

comment • r/ketoscience • benefit

# Abstract The brain accounts for about 2% of the body’s weight, but it consumes about 20% of the body’s energy at rest, primarily derived from ATP produced in mitochondria. The brain thus has a high mitochondrial density in its neurons be…

Open mention
https://eutils.ncbi.nlm.nih.gov/entrez/eutils/esearch.fcgi?db=pubmed&term=(%22sulforaphane%22)%20AND%20humans%5BMeSH%20Terms%5D%20AND%20(supplement*%5BTitle%2FAbstract%5D%20OR%20supplementation%5BTitle%2FAbstract%5D%20OR%20intake%5BTitle%2FAbstract%5D%20OR%20dietary%20supplements%5BMeSH%20Terms%5D)%20AND%20randomized%20controlled%20trial%5BPublication%20Type%5D
  • https://eutils.ncbi.nlm.nih.gov/entrez/eutils/esearch.fcgi?db=pubmed&term=(%22sulforaphane%22)%20AND%20humans%5BMeSH%20Terms%5D%20AND%20(supplement*%5BTitle%2FAbstract%5D%20OR%20supplementation%5BTitle%2FAbstract%5D%20OR%20intake%5BTitle%2FAbstract%5D%20OR%20dietary%20supplements%5BMeSH%20Terms%5D)%20AND%20meta-analysis%5BPublication%20Type%5D
  • https://pubmed.ncbi.nlm.nih.gov/35246237/
  • https://pubmed.ncbi.nlm.nih.gov/37023957/
  • https://pubmed.ncbi.nlm.nih.gov/41275316/
  • https://pubmed.ncbi.nlm.nih.gov/31280187/
  • https://pubmed.ncbi.nlm.nih.gov/40041932/
  • https://pubmed.ncbi.nlm.nih.gov/31155953/
  • https://pubmed.ncbi.nlm.nih.gov/36014767/
  • https://pubmed.ncbi.nlm.nih.gov/33503851/
  • https://pubmed.ncbi.nlm.nih.gov/22537070/
  • https://pubmed.ncbi.nlm.nih.gov/37619675/
  • https://pubmed.ncbi.nlm.nih.gov/35934064/
  • https://pubmed.ncbi.nlm.nih.gov/33207780/
  • https://pubmed.ncbi.nlm.nih.gov/33003518/
  • https://pubmed.ncbi.nlm.nih.gov/36915952/
  • https://pubmed.ncbi.nlm.nih.gov/38612798/
  • Community Sources

    • https://old.reddit.com/search.json?raw_json=1&sort=relevance&t=year&limit=12&q=%22sulforaphane%22%20(supplement%20OR%20dosage%20OR%20stack%20OR%20side%20effects%20OR%20review)%20(subreddit%3ASupplements%20OR%20subreddit%3ANootropics%20OR%20subreddit%3ABiohackers%20OR%20subreddit%3Alongevity%20OR%20subreddit%3ANutrition%20OR%20subreddit%3AHubermanLab%20OR%20subreddit%3ASleep%20OR%20subreddit%3AFitness%20OR%20subreddit%3Aketoscience%20OR%20subreddit%3AStackAdvice)
    • https://old.reddit.com/r/Biohackers/comments/1plwwh8/eufr_the_hard_detox_budget_stack_3g_nac_activated/.json?raw_json=1&sort=top&limit=25
    • https://old.reddit.com/r/Biohackers/comments/1llbxrj/best_way_to_make_sulforaphane_supplements/.json?raw_json=1&sort=top&limit=25
    • https://old.reddit.com/r/ketoscience/comments/1kefli0/sulforaphane_and_brain_health_from_pathways_of/.json?raw_json=1&sort=top&limit=25
    • https://www.reddit.com/search/?q=Sulforaphane%20(broccoli%20sprout%20extract)
    3. Pharmacological and dietary-supplement treatments for autism spectrum disorder: a systematic review and network meta-analysis.

    PUBMED • 2022 • Human evidence curation set

    PMID 35246237 from Mol Autism.

    Outcome: See linked PubMed abstract for methods and outcomes.[2108,3319,3345, etc.]

    Open source
    4. Sulforaphane exhibits potent renoprotective effects in preclinical models of kidney diseases: A systematic review and meta-analysis.

    PUBMED • 2023 • Human evidence curation set

    PMID 37023957 from Life Sci.

    Outcome: See linked PubMed abstract for methods and outcomes.[2108,3319,3345, etc.]

    Open source
    5. Investigating the clinical efficacy, safety and molecular mechanism of sulforaphane in autism spectrum disorder: an integrated study combining meta-analysis, network pharmacology, and computational biology.

    PUBMED • 2025 • Human evidence curation set

    PMID 41275316 from BMC Pharmacol Toxicol.

    Outcome: See linked PubMed abstract for methods and outcomes.[2108,3319,3345, etc.]

    Open source
    6. Chemoprevention of Breast Cancer With Vitamins and Micronutrients: A Concise Review.

    PUBMED • 2019 • Human evidence curation set

    PMID 31280187 from In Vivo.

    Outcome: See linked PubMed abstract for methods and outcomes.[2108,3319,3345, etc.]

    Open source
    7. Randomized Phase II Clinical Trial of Sulforaphane in Former Smokers at High Risk for Lung Cancer.

    PUBMED • 2025 • Human evidence curation set

    PMID 40041932 from Cancer Prev Res (Phila).

    Outcome: See linked PubMed abstract for methods and outcomes.[2108,3319,3345, etc.]

    Open source
    8. Sulforaphane Bioavailability and Chemopreventive Activity in Men Presenting for Biopsy of the Prostate Gland: A Randomized Controlled Trial.

    PUBMED • 2020 • Human evidence curation set

    PMID 31155953 from Nutr Cancer.

    Outcome: See linked PubMed abstract for methods and outcomes.[2108,3319,3345, etc.]

    Open source
    9. Accumulation of Sulforaphane and Alliin in Human Prostate Tissue.

    PUBMED • 2022 • Human evidence curation set

    PMID 36014767 from Nutrients.

    Outcome: See linked PubMed abstract for methods and outcomes.[2108,3319,3345, etc.]

    Open source
    10. 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.

    PUBMED • 2021 • Human evidence curation set

    PMID 33503851 from Nutrients.

    Outcome: See linked PubMed abstract for methods and outcomes.[2108,3319,3345, etc.]

    Open source
    11. Effect of broccoli sprouts on insulin resistance in type 2 diabetic patients: a randomized double-blind clinical trial.

    PUBMED • 2012 • Human evidence curation set

    PMID 22537070 from Int J Food Sci Nutr.

    Outcome: See linked PubMed abstract for methods and outcomes.[2108,3319,3345, etc.]

    Open source
    12. Sulforaphane Supplementation Did Not Modulate NRF2 and NF-kB mRNA Expressions in Hemodialysis Patients.

    PUBMED • 2024 • Human evidence curation set

    PMID 37619675 from J Ren Nutr.

    Outcome: See linked PubMed abstract for methods and outcomes.[2108,3319,3345, etc.]

    Open source
    13. Histone Deacetylase Inhibition by Gut Microbe-Generated Short-Chain Fatty Acids Entrains Intestinal Epithelial Circadian Rhythms.

    PUBMED • 2022 • Human evidence curation set

    PMID 35934064 from Gastroenterology.

    Outcome: See linked PubMed abstract for methods and outcomes.[2108,3319,3345, etc.]

    Open source
    14. Efficacy of Sulforaphane in Neurodegenerative Diseases.

    PUBMED • 2020 • Human evidence curation set

    PMID 33207780 from Int J Mol Sci.

    Outcome: See linked PubMed abstract for methods and outcomes.[2108,3319,3345, etc.]

    Open source
    15. Dietary Factors and Supplements Influencing Prostate Specific-Antigen (PSA) Concentrations in Men with Prostate Cancer and Increased Cancer Risk: An Evidence Analysis Review Based on Randomized Controlled Trials.

    PUBMED • 2020 • Human evidence curation set

    PMID 33003518 from Nutrients.

    Outcome: See linked PubMed abstract for methods and outcomes.[2108,3319,3345, etc.]

    Open source
    16. A Review on Autism Spectrum Disorder: Pathogenesis, Biomarkers, Pharmacological and Non-Pharmacological Interventions.

    PUBMED • 2023 • Human evidence curation set

    PMID 36915952 from CNS Neurol Disord Drug Targets.

    Outcome: See linked PubMed abstract for methods and outcomes.[2108,3319,3345, etc.]

    Open source
    17. Do Brassica Vegetables Affect Thyroid Function?-A Comprehensive Systematic Review.

    PUBMED • 2024 • Human evidence curation set

    PMID 38612798 from Int J Mol Sci.

    Outcome: See linked PubMed abstract for methods and outcomes.[2108,3319,3345, etc.]

    Open source