It's a very effective weight loss aid with little side effects, considering the amount of weight you lose soo rapidly. I honestly don't know how it does it but it truly works. Unfortunately, it doesn't work for very long after discontinued usage of the medication. I noticed immediate weight gain after I stopped taking it, even though I hadn't changed my exercise or dieting habits. Effectiveness This medication works, undoubtably. It cuts your appetite out and just works well at burning fat quickly. Seeing that I am not a medical professional, I do not know how this medication works, but what I do know is boy does it ever work!! Side Effects The side effects with this medication was nominal, as I noticed only rapid heartbeat. Don't get me wrong, the heartbeat issue was pretty bad. Overall, the rapid heartbeat was far outweighed by the "magic" rapid weight loss. I say that this medication excels expectations.