Carnitine generally has two forms, L-carnitine and D-carnitine. L-carnitine is the physiologically active form in the body. In general, carnitine refers to L-carnitine.
Carnitine is not an essential nutrient and can be formed in the liver from other nutrients - mainly two amino acids, lysine, and methionine. In addition, carnitine is also high in animal foods, and meat products, especially beef and pork are good sources of carnitine.
The main physiological function of carnitine is to promote the conversion of fat into energy. Taking carnitine can reduce body fat and weight without reducing water and muscle.
Therefore, carnitine has an effect on weight loss, but it has no significant effect on exercise. At present, L-carnitine has been used in the fields of medicine, health care, and food.