Nutrient Database

Sulforaphane

antioxidant

Approved

General information about nutrients. No diagnosis, no medical advice. If you take medication, are pregnant or have a medical condition, talk to your doctor before taking supplements.

Empty stomachFasting safe

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Overview

Isothiocyanate from cruciferous vegetables that activates the Nrf2 pathway.

Interactions

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Vitamin C stabilizes sulforaphane

Vitamin C protects sulforaphane from oxidative degradation and supports the Nrf2 antioxidant response pathway that sulforaphane activates, enhancing the overall cellular antioxidant defense.

Research status

Studied in preclinical models.

Top 5 food sources

Broccoli sproutsbroccoliBrussels sproutskalecauliflower

Expert opinions

Dr. Rhonda Patrick

Sulforaphane is Dr. Patrick's signature recommendation. She grows 3-day-old broccoli sprouts at home because they contain about 50 to 100 times more glucoraphanin than mature broccoli. She pairs them with a pinch of moringa seed powder (rich in myrosinase) or a brief heat shock (70 °C for 10 min) to convert glucoraphanin to active sulforaphane. She cites work by Fahey and Talalay (Johns Hopkins) on sulforaphane and the Nrf2 pathway. Target: the equivalent of 20 to 40 mg sulforaphane daily.

Recommended dose: ~40 mg (from sprouts)

Source: FoundMyFitness

Dr. David Sinclair

Johnson includes about 10 mg stabilized sulforaphane daily in Blueprint. He favors standardized glucoraphanin and myrosinase capsules (TrueBroc) over unstabilized sprout powders, since sulforaphane degrades rapidly at ambient temperature. Taken with the morning meal. The oxidative markers MDA, GGT and 8-OHdG are tracked quarterly.

Source: Dr. Sinclair Protocol

Expert profiles summarise publicly available statements. The named people do not cooperate with Stackwell and have not authorised these summaries. Not medical advice.

Expert consensus: Strong

Best from broccoli sprouts or stabilized supplements. Myrosinase needed for activation.