21st Century Estro Support 60 Tab contains a soybean based ingredient and should not be taken by those with soy or soybean allergies. It has Vitamins, Minerals and Herbs to support the needs of menopausal women. Keep out of reach of children. Do not take if pregnant, lactating or on birth control pills. Do not use if product appears to be tampered with or seal is broken. Store at room temperature. Take one (1) caplet daily before bedtime with food.This formula blend includes B vitamins, vitamin E, calcium, selenium, isoflavones, black cohosh, boron and herbal extracts.