No matter what you eat, whether it is to suppress appetite, accelerate fat consumption or increase excretion, it is because what you eat can produce these effects. Once you stop eating, the root cause of the effect will be gone, and obesity is inevitable, otherwise it will be too unscientific.
If you stop taking medicine, you will get thinner and thinner. It can only be that this medicine hurts your body and destroys your heart, spleen, stomach and kidney, so you won't gain weight again.