If there were truly a pill that could a) take the weight off, b) teach us how to keep it off, and c) do it all safely, the world would be full of size 2-6 people and it would be all over the news, being talked about by reputable sources, rather than late-night infomercials. The world is not full of size 2-6 people, and reputable sources are noticeably silent about these magical cures. What I do hear reputable sources talk about consistently is the value of a sustainable exercise program, and healthy eating. It is the only proven, safe way to shed pounds.
I would wager a guess that it took a few years to gain the weight you're trying to lose. It is going to take more than a few weeks to take it off, no matter how much we all want to see instant and noticeable results.
You probably do have results, even if the scale does not show them. Others explained water weight gain during the early weeks as our muscles grow accustomed to the new work, and our bodies work to figure out what to do with all this new, healthy fuel. Just be patient, hon. It will happen. It will not happen overnight, and even a pill will not make it so.
The best you can see from a pill is some results. The worst you might see is an unnaturally elevated heart rate that can prove quite dangerous, even for otherwise healthy people.