Home > Manufacturers > TwinLab > L-Arginine 500mg, 100 caps L-Arginine 500mg, 100 caps L-Arginine 500mg, 100 caps TL-243 Your Price: $8.29 Regular: $14.50 You Save: $6.21 Quantity: Description: L-Arginine may promote muscle-building activity in the body! Arginine is necessary for the execution of many physiological processes. These physiological processes include the removal of toxic waste products from the body, and immune system defenses. The Inside Scoop: Serving Size: 1 Capsule Servings Per Container: 100 Ingredient Details: L-Arginine: 500 mg -(from L-arginine hydrochloride, L-arginine) Other Ingredients: Gelatin, Purified Water, Cellulose, MCT, Magnesium Stearate.