Amino Acids [Chemical/Ingredient] Excitatory Amino Acids [Chemical/Ingredient] Endogenous amino acids released by neurons as excitatory neurotransmitters. Glutamic acid is the most common excitatory neurotransmitter in the brain. Aspartic acid has been regarded as an excitatory transmitter for many years, but the extent of its role as a transmitter is unclear. C0243046 Excitatory Amino Acids Excitatory Amino Acid N0000011371 71687 M0028199 C291727 Amino Acids, Excitatory D018846 Excitatory Amino Acids