NOW - L-Citrulline Pure Powder - 113  Gram(s) - NPN : 80057849Citrulline is a non-essential amino acid that is an important intermediate in the urea cycle, functioning along with Arginine and Ornithine to rid the body of ammonia, a byproduct of protein metabolism. Because Citrulline is a precursor of Arginine, it provides a readily available source material for Arginine production, thereby helping the body maintain healthy Arginine levels. Powder form allows for controlled dosing and can be added to health shakes.DIRECTIONS & USEAdult Dosage: Take ½ teaspoon 2 times daily between meals.CAUTIONS & NOTESDo not use if you are pregnant or breastfeeding, or if you have had a myocardial infarction (heart attack). Consult a health care practitioner prior to use if you are on a low-protein diet, if you have kidney, liver or cardiovascular disease, or if you are taking medications for any of these diseases.INGREDIENTS  Each ½ level teaspoon contains:L-Citrulline 1500 mgNon-Medicinal Ingredients: None.