L-Carnitine is a natural compound found in some foods such as avocado and beef. Although it is unlikely anyone eats these foods in large enough quantities for the l-carnitine to have any affect, which is why it can be added to your diet in supplement form. L-carnitine can assist with your goal of losing weight and to improve your workout performance. It works by converting fatty acids into fuel your body can use for energy, whilst also promoting growth. If overall body transformation is your main goal, then L-carnitine is most definitely a product you need.