S-Equol is a non-hormonal, plant-derived compound that selectively binds to estrogen receptors—particularly estrogen receptor beta (ER-β)—to support women’s health without introducing exogenous hormones. It is the biologically active metabolite of soy isoflavones (primarily daidzein). However, only approximately 30–50% of individuals possess the gut microbiota required to naturally convert soy isoflavones into equol, making direct supplementation beneficial for many women.
✅ S-Equol (Active Form)
- Naturally produced in the human body (in equol producers)
- High affinity for estrogen receptor beta (ER-β)
- Responsible for the majority of documented health benefits
- Clinically studied for efficacy and safety
❌ R-Equol (Less Active Form)
- Not naturally produced in humans
- Significantly lower biological activity
- Limited clinical relevance
Zentra S-Equol features EquoPro®, a high-purity (≥99%) S-equol produced through a proprietary microbial fermentation process from soy isoflavones. This advanced formulation delivers the biologically active form of equol in a consistent and reliable manner.
Designed specifically for women’s health, Zentra S-Equol helps support hormonal balance and provides a targeted solution for individuals who are unable to naturally produce equol.
Returns will be accepted for up to 10 days of Customer’s receipt or tracking number on unopened items. You, as a Customer, are obliged to inform us via email before you return the item.

Scientifically Formulated
Built with carefully selected ingredients and clear formulation logic.

Clear Ingredient Selection
Uses clearly listed, purpose-driven ingredients.

Easy to Use Daily
Simple dosing and convenient for everyday routines.

