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Review sulforaphane supplements

Evaluate a sulforaphane or glucoraphanin product for a specific purpose, accounting for its formulation and limited clinical evidence.

At a glance

  • Evidence: A defined broccoli-sprout beverage changed metabolites of two air pollutants.Urinary metabolites of selected air pollutants · Limited certainty · Randomized intervention
  • What’s uncertain: This does not demonstrate microplastic removal or disease prevention.
  • First step: Check the actual formulation and the human outcome tested before considering a product.
  • Before you try it: Do not use a sulforaphane product as a detox treatment or replace medical care. All precautions

Takeaway

A broccoli-sprout beverage trial changed urinary excretion of metabolites of two air pollutants, not microplastic elimination or clinical disease. Human studies show that active myrosinase and formulation strongly affect sulforaphane availability, including a small 2026 crossover trial. A capsule cannot inherit the results of every sprout beverage, and biomarker changes do not establish prevention of cancer, dementia or other disease. The food-preparation guide under fruit and vegetables is a separate practice.

Broccoli sprouts, illustrating a sulforaphane precursor source rather than an equivalent supplement formulation.Discussed byRhonda PatrickView statements ↓
NutritionLong-term healthUnder 10 min · Easy · Moderate
Reviewed Oct 3, 2026
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Scientific evidence

What the research shows

Outcome assessments based on research, including its uncertainties and limitations.

Urinary metabolites of selected air pollutants

Finding: Benefit supportedCertainty: Limitedstudies found a benefit from doing this

Evidence basis: randomised trials

One broccoli-sprout beverage trial increased excretion of metabolites of two air pollutants.

Population: 291 adults in rural Qidong, China, exposed to substantial air pollution.

Research details

Summary

A 12-week trial in 291 adults in an air-polluted region found higher urinary excretion of benzene- and acrolein-derived conjugates, but not crotonaldehyde. This is a pharmacodynamic biomarker result for a defined beverage. It does not show removal of microplastics, lower disease incidence or equivalent performance of retail capsules.

Why this certainty

Limited because one formulation-specific trial supports a biomarker effect, not the wider clinical claims often attached to it.

Limitations

A specific beverage and exposure setting limit transfer to commercial supplements and other populations. No clinical disease endpoint or human microplastic burden was assessed.

Sources for this outcome:

Formulation bioavailability and general clinical prevention

Finding: Insufficient direct evidenceCertainty: Very limitedthis has not been directly tested

Evidence basis: indirect evidence, not a direct test of this exact habit

Sulforaphane availability varies by formulation; this does not establish general disease prevention.

Population: Small human formulation studies, including a 16-person single-dose crossover trial.

Research details

Summary

A human crossover study found much lower availability from a supplement without active myrosinase than from sprouts. In a 2026 single-dose crossover study in 16 adults, added myrosinase increased urinary recovery of sulforaphane metabolites. These availability studies do not determine which retail product improves a clinical outcome.

Why this certainty

Very limited for general prevention because the cited studies address conversion and exposure biomarkers rather than disease outcomes.

Limitations

Urinary recovery and blood metabolites are surrogate measures. Tested products and acute doses differ; improved conversion is not a measured clinical benefit.

Sources for this outcome:

What people say

Who discusses this?

Public statements, with positions specific to each source and topic. These views do not determine the scientific evidence assessment.

What the research shows ↑

Practical steps and precautions

How to try it

  1. Specify the outcome you are considering and check whether it was tested in people with the same product type.
  2. Distinguish active sulforaphane from its precursor glucoraphanin and check whether active myrosinase was part of the tested formulation.
  3. Do not infer an effective personal dose from a podcast, cell experiment or a different formulation.
  4. If you choose to use a product, review suitability, medicines and quality with a clinician or pharmacist and retain ordinary vegetable intake.

Precautions

  • Do not use this supplement as a microplastic detox treatment or a substitute for medical care.
  • Safety and long-term effects in pregnancy, childhood and people with medical conditions need specific review.

References

Rapid and sustainable detoxication of airborne pollutants by broccoli sprout beverage: results of a randomized clinical trial in China.

Egner PA, Chen JG, Zarth AT, Ng DK, Wang JB, Kensler KH, Jacobson LP, Muñoz A, Johnson JL, Groopman JD, Fahey JW, Talalay P, Zhu J, Chen TY, Qian GS, Carmella SG, Hecht SS, Kensler TW. · Cancer prevention research (Philadelphia, Pa.) · 2014

Randomized 12-week placebo-controlled trial of a broccoli-sprout beverage in 291 adults exposed to air pollutionVerified from abstract
Open original source

Bioavailability and inter-conversion of sulforaphane and erucin in human subjects consuming broccoli sprouts or broccoli supplement in a cross-over study design.

Clarke JD, Hsu A, Riedl K, Bella D, Schwartz SJ, Stevens JF, Ho E. · Pharmacological research · 2011

Human crossover comparison of broccoli sprouts with a supplement lacking active myrosinaseVerified from abstract
Open original source

Exogenous myrosinase from mustard seed increases bioavailability of sulforaphane from a glucoraphanin-rich broccoli seed extract in a randomized clinical study.

Mastaloudis A, Holcomb L, Fahey JW, Sakaguchi CA, Nieman DC, Kay C, O'Donnell R, Pecorelli A, Kinney M, Li Y, Ishaq SL, Valacchi G. · Scientific reports · 2026

Randomized double-blind single-dose crossover study in 16 adultsVerified from abstract
Open original source

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Editorial history and review method

Revision 2 · Approved for publication · Codex (publication approval explicitly authorized by site owner; category migration)

Prepared and checked with AI. Publication approval does not imply independent expert review. Request a correction.

New revision-1 Standard draft. Evidence and original-video attribution are separate. Check practice matching, population and formulation limits, null results and safety wording before independent approval. Sources: egner-2014-broccoli-sprout-beverage, clarke-2011-sulforaphane-bioavailability, mastaloudis-2026-sulforaphane-myrosinase. Publication release 2026-10-04: site owner authorized a bounded AI audit and release of this exact revision. See docs/release-audit-2026-10-04.md for source-check findings and limits. No independent health-professional or peer review is claimed. Category migration 2026-10-04: removed the separate goals field; categories: Nutrition, Long-term health → Nutrition, Long-term health. Research assessments, sources, guidance, precautions, and evidence review dates are unchanged. This revision awaits publication approval; no new evidence review is claimed. Publication approval 2026-10-04: site owner explicitly accepted all current category-migration revisions for deployment and requested that remaining limitations be retained in docs/content-review-backlog.md. Approval applies to this exact content revision. No new evidence review, independent expert review, or clinical validation is claimed; existing precautions and disclosures remain in effect.