go back to basics. Your body can only reflect your lifestyle. If you "packed on the pounds", that means whatever you're doing in your daily life is what left you w/ excess flab. If you changed the way you eat to more shit food, if you stopped training, if you work too many hours, if you don't sleep well or started drinking a lot more than usual, etc. Then you're basically eating too much or not burning off what you eat. Popping pills for the most part just applies a stimulant. This is a probably not a strongly supported statement, but generally when talking about thermos / stimulants, etc. At best there's something like 3% increase in "fat burning". That can be accomplished by just getting int the gym. Step back and look at your diet. If you're randomly eating a lot of junk food, drinking more than usual, eating out more often, etc. Your body is getting excess calories that it just isn't burning. Reduce the shit food, eat cleaner / less processed / simpler food, smaller portions, drink more water. Save your cheat meals for once/week instead of whenever, and get good quality sleep. Even if you actually did drop some weight on whatever these pills are, if you haven't made these types of changes to your lifestyle, you won't be able to support and maintain the weight loss - basically your body will just rebound, possibly to even fatter than before you started the pills and you're even further back from where you started. Start by just cleaning up your diet & training.