L-arginine is a conditionally essential amino acid, meaning that under normal circumstances the human body can synthesize it to meet its needs. In the event of poor nutrition or heavy physical exertion, the biosynthetic pathway may not produce sufficient amounts of arginine and some additional amount may need to be consumed through diet or supplementation. Since it is the only precursor to nitric oxide (NO) and an important precursor to creatine, it is common for athletes and bodybuilders to take arginine as a supplement. Taking high-dose arginine capsules is the easiest way to meet the higher demand for arginine.Format:Bottle of 90 capsules.How to use:Take one serving (1 capsule) 30 minutes before training. You can take an extra dose as soon as you get up.Ingredients:L-arginine HCL, anti-caking agent (magnesium stearate), glazing agent (bovine gelatin; dye: Candurin® fine silver, brilliant black, black iron oxide).Nutritional information: per capsulefor 2 capsulesL-arginine HCl1300mg2600mg