L-carnitine, also known as L-carnitine, is an amino acid that encourages the conversion of fat into energy. L-carnitine has no toxic side effects on human body, red meat is the main source of L-carnitine, the human body can also be synthesized to meet the physiological needs of muscle tissue with high carnitine content. It is mainly as a carrier to transfer fatty acids from the outside of the mitochondria to the inner membrane of the mitochondria, increase lipolysis to play the effect of weight loss, and the consumption of how much fat does not lie in the carrier how much, but lies in the mobilization of the amount of fat, so take the L-carnitine is generally in the strenuous exercise before the body has a large amount of fat mobilization under the premise of a very good role. It should be noted that levocarnitine is not approved for weight loss in the country is its indications, the approved indications are only renal insufficiency patients to correct carnitine deficiency, so levocarnitine is not a regular weight loss drug. L-carnitine can increase fat metabolism, but can not really increase the total calorie consumption, so it is only as an auxiliary drug for exercise weight loss. The most important thing to lose weight is to control the diet and insist on exercise, any want to lose weight quickly through drugs, surgery and other methods are not desirable and even have a certain degree of danger.