C5 H10 N2 O3

Glutamine is an amino acid that is primarily found in the body's skeletal muscles. It is a precursor for many proteins and is used in signalling catabolic stress. It is also an important in healthy immune system and digestive function.

Glutamine is also very useful in bodybuilding. It can help stabilize the body's insulin levels and help prevent muscle catabolism, which means that you can get freakishly huge.