Common Wegovy (semaglutide) side effects include nausea and vomiting, diarrhea, and stomach pain. Constipation, bloating, headache, and fatigue are also possible. Many Wegovy side effects are worse when you start the medication and after your dose is increased. To help lessen these side effects, your Wegovy dose will be increased slowly over time to help your body adjust to the medication.
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