While I’ve seen people helped with diet drugs in the short run, weight tends to bounce back after medications are discontinued, despite best intentions and efforts to maintain the hard-won weight loss.
I compare this phenomenon to a person who is diagnosed with high blood pressure and put on medications to bring it down. It works, but don’t expect the blood pressure to stay low when you go off the medications! It’s true for both blood pressure management and weight control: Our bodies have a strong maintenance system that’s difficult to override, even when it’s sometimes not in our best interest.