L-carnitine, also known as Left-carnitine, vitamin BT, chemical name β-hydroxyγ-trimethylammonium butyric acid, is the white transparent fine powder that is a kind of amino acid promoting the conversion of fat into energy. The main source of L-carnitine is red meat. Different types of daily diets already contain 5-100 mg of L-carnitine.
In the past two years, melatonin has been touted by various businesses as particularly magical, claiming that taking melatonin has all kinds of effects, such as returning black hair, beautification and waking up naturally after sleeping. Some of the benefits of melatonin are natural, while others a