PS-100 is phosphatidylserine a phospholipid that plays an essential role in brain cell membrane structure. Studies suggest that phosphatidylserine helps support cognitive function. Supports the Function of the Brain - Enhances cognitive function including memory learning and concentration - Reduces cortisol the body's main stress hormone - Improves mental stamina - Formulation based on clinical research Amount: 1 Capsule Phosphatidylserine 100 mg Non-medicinal ingredients: microcrystalline cellulose silicon dioxide. Capsule: hypromellose. Suggested Use: (Adult): Take 1 capsule three times daily with/without food or as directed by a qualified health practitioner. Cautions : Consult a health care practitioner if you are pregnant or breastfeeding. Contains soy. Do not use if you are allergic to soy.