bulksupplements L-Glutamic Acid HCl - For Digestive Health What is L-Glutamic Acid HCl? L-glutamic acid is a nonessential amino acid that is uséd in nearly all living things in the biosynthesis of proteins. L-glutamic acid HCl is often uséd as a food seasoning, because it is recognized for its savory, umami flavor and its ability to enhance the flavors of otherwise bland dishes. L-Glutamic Acid HCl Benefits* L-glutamic acid HCl is commonly uséd as a food seasoning to add a savory flavor and to enhance the flavor of otherwise bland dishes. It is also useful as part of a pre-workout or post-workout regimen, as it may help boost athletic endurance and aid workout recovery. L-glutamic acid HCl also supports digestive health and may aid brain function.