Does Wegovy make you tired?

Yes, and it is on the label rather than only in reports: fatigue appears among the common adverse reactions in Wegovy's FDA prescribing information, published 2026-06-30. Listed means it was seen often enough in the trials to be printed, not that it happens to everyone. The same reaction is on the label of Wegovy pill too, on the same molecule, though not on every label that carries semaglutide. Tiredness on these drugs usually has a simpler cause than the drug itself: eating far less. A sharp drop in intake means fewer calories, and often less fluid, less salt and less iron with them. The label lists fatigue as a side effect, but the common version of it is the deficit rather than the molecule. It clusters in the days after each dose increase. Wegovy steps up on a published schedule that reaches the maintenance dose at week 17. Most people see a few rough days after each step and a settling in between, not one long stretch. Once you are at 2.4 mg once weekly, or 1.7 mg and no longer stepping up, the trigger stops recurring. What helps first: counting what you actually ate for three days. Appetite suppression is the point of the drug, and it is easy to fall well under what a body needs without noticing. It stops being ordinary at a specific line: fatigue with breathlessness, a racing heart or dizziness on standing. Those point at dehydration or anemia rather than at the drug settling in.