Glutamic acid, also called glutamate, is a non-essential amino acid that takes on many tasks in the body, including in energy metabolism and as a starting material for forming other amino acids such as glutamine. It occurs in relevant amounts in almost all protein-containing foods.
In bound form, that is as a component of proteins, glutamic acid differs from free glutamate, which is known, among other things, as a flavour enhancer and is added to some processed foods. The body basically metabolises both forms in a similar way.
Relevance for nutrition and sport
As one of the most abundant amino acids in food by quantity, glutamic acid contributes to general protein supply and energy metabolism. Targeted supplementation with isolated glutamic acid plays hardly any role in sport, as the requirement is already met by a normal, protein-rich diet.
Better known in a sports context is the related amino acid glutamine, which can be formed from glutamic acid and is discussed in its own right, for example in connection with gut health. The guide glutamine explains more. The two amino acids are closely linked in metabolism but are viewed differently in sports nutrition and studied separately, since their respective roles in metabolism differ.
