Glucoraphanin (Broccoli Seed Extract) vs HMB

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

Glucoraphanin (Broccoli Seed Extract)HMB
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

HMB

Supplements

Mechanism

Leucine metabolite that reduces muscle protein breakdown and may support recovery under high training or caloric deficit conditions.

Contraindications

  • None established at standard doses

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