Carnitine plays a vital role in cellular fatty acid metabolism. It is primarily known for transporting long-chain fatty acids into the cellular mitochondria, where they can be oxidized and used for energy production. This process is critical during periods of intense exercise or fasting. Although the body can synthesize carnitine, it can also be obtained from dietary sources, mainly meat and other animal products. There are different forms of carnitine, with L-carnitine being the most common and biologically active form. Carnitine has been studied for various potential health benefits, including support in cardiovascular health, muscle recovery, and possibly aiding in weight loss. However, results are mixed, and more research is needed to understand its effects fully. Supplements containing carnitine are popular among athletes and those seeking to improve fitness and energy levels.