Effective. Midvein slimming master can effectively block the absorption of carbohydrates, achieve double sniper, improve the metabolic rate of human body, and thus accelerate the burning of fat. Master Midrib Weight Loss, whose main components are L-carnitine and dietary fiber, can help people to increase fat burning and reduce fat intake, thus achieving the effect of weight loss. The effect of losing weight varies from person to person, because everyone's physique and metabolic ability are different.