, clinical nutrition grade, 1000mg free-form l-arginine; needs no digestion & fast absorbed, premium grade & popular with men, great quality great value!l-arginine is converted in the body into nitric oxide (no) a substance which has the well documented effect of relaxing blood vessels speeding recovery rates & aiding performance. acting as a vasodilator nitric oxide helps the body maintain a good blood flow & a healthy cardiovascular performance. power athletes track athletes & strength athletes are increasingly choosing to add l-arginine supplements to their training regime. it’s for this reason that arginine has become a popular pre-workout supplement. our product delivers the amino acid in free-form meaning it is rapidly absorbed & is a popular high potency product recommended by men's health magazine. we also sell a highly concentrated pea protein supplement that gives you 1.6g of arginine per serving but for convenience nothing beats our l-arginine tablets. each tablet provides 1000 mg of free-form l-arginine which is rapidly absorbed into the bloodstream. we use a pure pharmaceutical grade l-arginine made in the uk to the highest standards.