Glucoraphanin (Broccoli Seed Extract) vs Pterostilbene

Side-by-side comparison of mechanisms, dosing, interactions, and stacking potential.

Glucoraphanin (Broccoli Seed Extract)Pterostilbene
CategorySupplementsSupplements
Standard Dose
Timing
Cycle Duration
Evidence LevelModerate-StrongModerate

Mechanism

Stable precursor to sulforaphane. Requires myrosinase enzyme (from gut bacteria or co-administered) for conversion. Provides sustained sulforaphane release compared to direct supplementation. Activates Nrf2 pathway for antioxidant and detoxification gene expression.

Contraindications

  • Thyroid conditions (goitrogen at very high doses)
B

Pterostilbene

Supplements

Mechanism

Dimethylated analog of resveratrol with 4x greater oral bioavailability. Activates SIRT1 and AMPK, reduces oxidative stress, and improves lipid profiles. Superior pharmacokinetics compared to resveratrol due to methyl groups protecting against glucuronidation.

Contraindications

  • Hormone-sensitive conditions (mild estrogenic activity)

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