Don’t look to dietary supplements for help in burning calories or weight loss. Products that claim to speed up your metabolism are often more hype than help, and some may cause undesirable or even dangerous side effects. Dietary supplement manufacturers aren’t required by the Food and Drug Administration to prove that their products are safe or effective, so view these products with caution and skepticism, and always let your doctor know about any supplements you take.
There’s no magical way to lose weight. It comes down to physical activity and diet. Take in fewer calories than you burn, and you lose weight. But if you’re worried about your metabolism or you can’t seem to lose excess weight despite diet and exercise, talk to your doctor.