L-Lysine from NOW Foods and Supplementstogo.com is an essential amino acid, which means your body cannot manufacture it. It must be obtained through the diet or by supplementation. Lysine is one of the most well known amino acids and is an essential component of all proteins. DetailsServing Size: 1/4 Level TeaspoonSuggested Use: As a dietary supplement, take 1/4 level teaspoon daily, preferably with meals.Free of: sugar, salt, starch, yeast, wheat, gluten, corn, soy, milk, egg or preservatives. Other Ingredients: None. Vegetarian Product.Warnings: Caution: Please discard the inedible freshness packet enclosed.Disclaimers: NoneNOW®L-Lysine is Pharmaceutical (USP) Grade.This product is sold by weight not volume.