Glutamine is one of the 20 naturally occurring amino acids, which are the building blocks of proteins. It is classified as a non-essential amino acid because the human body can synthesize it on its own.
However, under certain conditions, such as intense exercise, stress, illness, or injury, the body's demand for glutamine may exceed its ability to produce it, making it conditionally essential in such situations. In these cases, glutamine may need to be obtained from the diet or through supplementation.
