Arginine supplements are amino acids that are the basic constituents of proteins. They are the basic components of every vertebrae creature. This means human beings and we need these amino acids because they constitute the proteins we need. The supplements could be consumed if the body is lacking in the arginine amino acids and the supplements are on the higher end of the price scale. This could be because they are very important components for the human body. The supplements can also be taken to give the body extra protein which will help to put muscle mass and weight on the body. If you happen to be a bodybuilder these supplements may help you to gain extra protein which will increase your ability to lift weights.