Estrium® is a medical food designed to provide specialized nutritional support for women with premenstrual syndrome. Estrium provides a specialized blend of macronutrients with all essential vitamins and minerals, along with non-soy phytoestrogens, antioxidants, and flaxseed hull (equal to approximately one tablespoon of whole flaxseed) that were specially selected for their ability to promote healthy estrogen metabolism and healthy hormone balance.