Trusted since 1972. Active Ingredients 1 Tablet: L-Lysine Hydrochloride 500 mg; Microcrystalline Cellulose; Stearic Acid; Dicalcium Phosphate; Magnesium Stearate Directions Take 1 tablet daily as a dietary supplement or as directed by a healthcare professional. Protect from heat, light and moisture. Store in a cool, dry place. Purpose Dietary Supplement Warnings KEEP OUT OF REACH OF CHILDREN.