Conditionally Essential Amino Acid Nitric Oxide Precursor* Arginine is a conditionally essential basic amino acid involved primarily in urea metabolism and excretion, as well as in DNA synthesis and protein production.* It is an important precursor of nitric oxide (NO) and thus plays a role in the dilation of blood vessels.* The L-Arginine used in this product is pharmaceutical grade. Natural color variation may occur in this product. CONDITIONALLY ESSENTIAL AMINO ACID: Arginine is a conditionally essential basic amino acid involved primarily in urea metabolism and excretion, as well as in DNA synthesis and protein production.* NITRIC OXIDE PRECURSOR*: Arginine plays an important role in the dilation of blood vessels.* CLASSIFICATIONS/CERTIFICATIONS: Non-GMO, Kosher (contains gelatin), Soy Free GMP Quality Assured: NPA A-rated GMP certification means that every aspect of the NOW manufacturing process has been examined, including our laboratory/testing methods (for stability, potency, and product formulation). Packaged in the USA by a family owned and operated company since 1968.Container size: 100 veg capsulesServing size: 2 veg capsulesAmount per Serving % Daily Value ** Daily Value not established. L-Arginine (Free-Form) 1 g (1,000 mg) ** Other Ingredients: Hypromellose (cellulose capsule), Stearic Acid (vegetable source) and Silicon Dioxide. Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish or tree nut ingredients. Produced in a GMP facility that processes other ingredients containing these allergens.Suggested Usage: Take 2 capsules twice daily as needed. Take between meals or at bedtime with at least 240 ml of water or juice to facilitate absorption. Store in a cool, dry place after opening.Warnings:Take this product with at least 240 ml. of water or juice. For adults only. Not for pregnant or nursing women. Consult physician if taking medication (especially antihypertensives, anticoagulants, and antidiabetic drugs), have a medical condition (especially asthma or renal disease) or are planning to have surgery. This product should be avoided by persons with glaucoma or herpes simplex unless otherwise prescribed by a physician. Do not use if you have had a myocardial infarction or have established coronary artery disease. Keep out of reach of children.