ATP Science L-GlutamineL Glutamine What is L Glutamine? L Glutamine is non essential and conditionally essential in humans, meaning the body can usually synthesize sufficient amounts of it, but in some instances (such as intense exercise), the bodys demand for glutamine increases and glutamine must be obtained from the diet. In fact, glutamine is so important to the body, it is the most abundant amino acid found in the blood. The impressive resume of L Glutamine A variety