There's no magic bullet for losing weight. The most effective way to lose weight and keep it off is through lifestyle changes. Eat a healthy low-calorie diet with lots of fruits and vegetables and be physically active.
Weight-loss pills — prescription medicines, nonprescription drugs, herbal medicines or other dietary supplements — are all, at best, tools that may help with weight loss. But there is relatively little research about these products, and the best studied of these are prescription weight-loss drugs.