"D-Aspartic Acid" is a supplement containing a naturally occurring amino acid found in protein-rich foods like dairy, meat, and eggs. It plays a role in hormone synthesis, particularly in the production of luteinizing hormone, which influences testosterone levels. This amino acid is frequently incorporated into fitness and performance supplements for its potential impact on strength, endurance, and energy levels. Often included in targeted formulations, this supplement remains a distinct component in sports nutrition and hormonal health research.