bulksupplements L-Glutamic Acid - Boost Workout Performance What Is L-Glutamic Acid? L-glutamic acid is a nonessential amino acid that is used in nearly all living things in the biosynthesis of proteins. L-glutamic acid is often used 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 Benefits* L-glutamic acid is commonly used 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 preworkout or postworkout regimen, as it may help boost athletic endurance and aid workout recovery. L-glutamic acid also supports digestive health and may aid brain function. ✔️ BUILD PROTEINS* - L-Glutamic Acid is an essential amino acid that helps build proteins.