Amino acids are the building blocks of proteins, essential for muscle growth, repair, and overall bodily function. There are 20 different amino acids, nine of which are considered essential because the body cannot produce them and must obtain them from food or supplements. Amino acid supplements are commonly used by athletes, fitness enthusiasts, and those with specific dietary needs to support muscle recovery, enhance exercise performance, and promote overall health. These supplements typically come in forms such as powders, capsules, or tablets and may include branched-chain amino acids (BCAAs), which are particularly popular for their role in muscle recovery and energy production.