Sulforaphane (from Broccoli Sprout Extract) vs Urolithin A

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

Sulforaphane (from Broccoli Sprout Extract)Urolithin A
CategorySupplementsSupplements
Standard Dose
Timing
Cycle Duration
Evidence LevelStrongModerate-Strong

Mechanism

Isothiocyanate that activates Nrf2 — the master regulator of antioxidant defense. Upregulates glutathione synthesis, phase II detoxification enzymes, and heat shock proteins. Also inhibits HDAC (epigenetic modifier) and NF-kB (anti-inflammatory).

Contraindications

  • Thyroid conditions (goitrogen at very high doses)
  • Cruciferous vegetable allergy
B

Urolithin A

Supplements

Mechanism

Gut metabolite of ellagitannins that activates mitophagy — selective clearance of damaged mitochondria. Improves mitochondrial function, muscle endurance, and cellular energy production. Only ~40% of population can produce it endogenously.

Contraindications

  • Limited long-term safety data beyond 4 months

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