Carnitines, also known as L-carnitine, are a group of related compounds primarily involved in the metabolism of fatty acids. They play a crucial role in energy production by facilitating the transport of long-chain fatty acids into the mitochondria for oxidation. This process is essential for the efficient breakdown of fats and their conversion to usable energy, particularly in muscle tissues. Carnitines can be synthesized within the body from lysine and methionine or obtained through dietary sources such as red meat, fish, poultry, and some dairy products. Supplemental carnitines are often used by athletes and individuals seeking improved cardiovascular health and enhanced physical performance due to their role in energy metabolism. Additionally, studies have suggested potential benefits for managing certain neurological conditions and kidney diseases.