L-Arginine Powder by Now Foods Size 1 Lb Retail Price $39.99 Our Price $22.52 SKU # 210 Product ID # 23599 You Save 44% Buy Now! Description of L-Arginine Powder 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 Powder Supplement Facts Serving Size: 1/2 Level Teaspoon (1.5 g) Ingredients Amount %DV L-Arginine (Free-Form) 5.0 g (5,000 mg) * Other Ingredients: Vegetarian Formula. Free of: sugar, salt, starch, yeast, wheat, gluten, corn, soy, milk, egg or preservatives. * Percent Daily Values are based on 2,000 calorie diet.   Suggested Use for L-Arginine Powder As a dietary supplement, take 1/2 level teaspoon in juice or water, preferably on an empty stomach, one or more times daily as needed.   Warning for L-Arginine Powder This supplement 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.