What happens if you stop a weight-management medicine?

The NIDDK is direct about this: people who stop taking a prescription weight-management medicine commonly regain some or all of the weight they lost. That is described as an expected pattern rather than a personal failure, and it is one of the reasons these medicines are discussed as long-term treatment rather than a course you finish.

The reasons are physiological rather than motivational. Appetite regulation is part of what the medicine was doing, and when the medicine stops, that regulation changes back.

None of that means stopping is wrong for you. Cost, side effects and changing circumstances are all real, and they are exactly what the conversation with your prescriber is for. What this page can say is that the decision is a clinical one, and stopping without that conversation removes the chance to plan for what follows.