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.