Exercise. There aren't any readily available preparations that have been clinically proven to burn fat. Some companies make claims about their pill having great abilities to "Melt away fat", but the reality is it's all "placebo affect", meaning that if you're paying attention to what you're eating and taking their pill, you'll probably eat less and lose weight. But the pill had nothing to do with it, it's all in your head. A couple of interesting preparations are close to being approved or potentially being approved. But they will be by prescription only.