L-carnitine is the medium of human fat metabolism, which can help fatty acids enter mitochondria. Different products have different doses, and the specific dosage is also different. For example, Tomson's L-carnitine contains L-carnitine 22.0g, tea polyphenols 2.65438+ 100g, and total flavonoids 16.8mg twice a day, two tablets each time. It takes about 1 hour to take effect, and the action time is about 6 to 8 hours. Because taking L-carnitine needs to gain muscle and reduce fat, in order to achieve better slimming effect, the general taking method is to take it 1 hour before exercise.