L-Aspartic acid, an α-amino acid, is a vital component of proteins and serves as a key intermediary in various metabolic pathways within the human body. Aspartic acid plays multifaceted roles in both cellular structure and function, contributing to the synthesis of proteins, nucleotides, and neurotransmitters. It acts as a neurotransmitter itself, participating in signal transmission in the central nervous system. Additionally, L-aspartic acid is involved in the urea cycle, facilitating the elimination of ammonia from the body and maintaining nitrogen balance. Beyond its role in metabolism, aspartic acid has been studied for its potential therapeutic applications, including its use as a dietary supplement to support athletic performance, cognitive function, and energy metabolism. Found abundantly in protein-rich foods such as meat, fish, dairy products, and legumes, L-aspartic acid is integral to human nutrition and overall health. Its diverse functions underscore its significance in maintaining physiological balance and promoting optimal functioning of various bodily systems.