Hello, the weight loss mechanism of L-carnitine is as a carrier, carrying fat into cell mitochondria to "burn" productivity. From this point of view, L-carnitine is an auxiliary substance, which must be combined with aerobic exercise to accelerate fat metabolism and reduce fat stock. If you don't cooperate with exercise, you won't be able to lose weight. However, it has a clinically proven effect in maintaining and improving male reproductive health, especially sperm motility.