L-Arginine by Now Foods Potency 500 mg Size 100 Caps Retail Price $10.99 Our Price $6.59 SKU # 30 Product ID # 23551 You Save 41% Buy Now! Description of L-Arginine L-Arginine is a conditionally essential basic amino acid involved primarily in urea metabolism and excretion as well as DNA synthesis.   Ingredients of L-Arginine Supplement Facts Serving Size: 2 Capsules Ingredients Amount %DV L-Arginine (Free-from) 1.0 g (1000 mg)* Other Ingredients: Gelatin (capsule) and Magnesium Stearate. Free of: sugar, starch, yeast, wheat, gluten, corn, soy, milk. * Percent Daily Values are based on 2,000 calorie diet.   Suggested Use for L-Arginine As a dietary supplement, take 2 capsules 1-3 times daily, between meals or at bedtime with a carbohydrate drink to facilitate absorption.