Glutamine WHAT IS GLUTAMINE? Glutamine is the most abundant amino acids in the body, making up at least 60% of muscle tissues, which is why it has long been a favourite among athletes and the gym crowd. Glutamine is considered a non-essential amino acid because the body can make its own. We also get glutamine in our diet, in foods such as animal and plant-based protein, though research tells us that most people simply do not get enough through diet alone. https://www.nationalnutrition.ca/sports-nutrition/glutamine.html #Glutamine