Does Zepbound cause acid reflux?

Yes, and it is on the label rather than only in reports: reflux appears among the common adverse reactions in Zepbound's FDA prescribing information, published 2026-09-02. Listed means it was seen often enough in the trials to be printed, not that it happens to everyone. Reflux on these drugs is a plumbing problem before it is an acid problem. A stomach that empties slowly stays fuller for longer, pressure builds under the valve at the top, and what comes back up is what the stomach still holds. That is why it is worst at night and after a large meal, and why acid reducers help less here than people expect. It clusters in the days after each dose increase. Zepbound steps up on a published schedule that reaches the maintenance dose at week 5. Most people see a few rough days after each step and a settling in between, not one long stretch. Once you are at 5 mg, 10 mg or 15 mg once weekly and no longer stepping up, the trigger stops recurring. What helps first: not lying down within three hours of eating, which does more than any other single change. It stops being ordinary at a specific line: reflux that wakes you choking, difficulty or pain swallowing, or vomiting blood. Also worth naming: if you are ever sedated or anesthetized, tell the team you take this drug — a stomach that empties slowly is the reason pulmonary aspiration appears on these labels.