Glycine is most important and simple, nonessential amino acid in humans, animals, and many mammals.

Clinical substitution of this nonessential amino acid in critically ill persons results in a reduction of epithelial atrophy and in an accelerated recovery.

He talked about the chemistry that made glycine, found in abundance in soybeans, the best-tasting of the nonessential amino acids.

-Glutamine is a nonessential amino acid that becomes essential when we're under certain types of stress, such as surgery.