Generally speaking, you can take L-carnitine twice a day and take three tablets each time. Once before exercise, for example, at 7: 30 every night, you can take three tablets of L-carnitine at 7: 00, and the other time you can eat it half an hour before breakfast. If you take L-carnitine before breakfast, I suggest you drink a glass of boiled water on an empty stomach before taking it, so that its effects can be fully released. Finally, I need to remind you that although L-carnitine can promote the metabolism of fat in the human body, if you only eat L-carnitine and don't exercise at all, it is likely that the final slimming effect will be very general. I suggest that you can keep exercising for half an hour to an hour every day while taking L-carnitine. The above is a personal answer about when to eat L-carnitine to lose weight. Generally speaking, if you want to get better weight loss effect by taking L-carnitine, you should grasp the intake time. In addition, the choice of L-carnitine brand is also very important. We should choose those brands with good reputation in the market.