3 product profiles across 3 brands. Compare the selected format, ingredients and evidence before choosing.
Search and filter this category ↗Broccoli seed extracts may contain glucoraphanin, a precursor that can be converted into sulforaphane. Conversion depends partly on the enzyme myrosinase and on digestion. An extract weight, a glucoraphanin amount and an actual sulforaphane amount therefore describe different things; comparing them as equivalent doses can be misleading.
Studies measuring absorbed sulforaphane or its metabolites show that formulation matters. These are not the same as trials showing fewer illnesses, longer life or clinical “detoxification.” Results from a tested sprout beverage or enzyme-treated extract do not establish a benefit for every seed-extract capsule.
Egner et al. · Broccoli-sprout beverage bioavailability trial (2011) ↗ · Atwell et al. · Sulforaphane bioavailability from broccoli preparations (2015) ↗
Ingredient context reviewed 2026-10-26. General ingredient evidence does not verify the exact branded products below.
60 delayed-release capsules; 30 servings
The manufacturer lists 35 mg sulforaphane glucosinolate from broccoli seed extract with myrosinase per two capsules. The 60-capsule bottle provides 30 two-capsule servings.
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30 vegetarian capsules; one-capsule serving
Each capsule lists 385 mg TrueBroc broccoli seed extract standardized to 10% glucoraphanin, 145 mg white mustard seed extract providing myrosinase and 100 mg vitamin C.
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60 capsules — US label
Per 1 capsule: Vitamin C (as Ascorbic Acid) 100 mg; Mustard Powder (seed) 145 mg; Sulforaphane Glucosinolate (from Broccoli extract (seed) and Kale (seed)) 50 mg.
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