Acetyl L-Carnitine (ALCAR) is a natural substance that is structurally similar to the amino acid L-carnitine. It is produced by the body and can also be obtained through the diet or supplements. ALCAR has been studied for its potential health benefits, including improving brain function, reducing depression and anxiety symptoms, and aiding in weight loss by enhancing fat metabolism. It may also help to improve exercise performance and reduce age-related cognitive decline