There are few areas as popular as amino acid supplements. The popularity of
amino acid products is based, in part, on the notion that there is an incr
eased need for these basic muscle building blocks that is better met by sup
plements than by dietary protein. Another belief is that these substances s
erve as energy sources involved in certain metabolic processes that are imp
ortant during exercise. This article effectively addresses the more popular
beliefs in a practical way, and using the literature, outlines the potenti
al benefits and shortcomings of these products.