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What are the most common Zepbound side effects?

Reviewed by the glpzoom Editorial Team against primary clinical sources — FDA labeling, peer-reviewed trials, and specialty-society guidelines.
Content current as of June 2026; updated when guidance or availability changes.
Zepbound (tirzepatide) shares the GLP-1 side-effect profile: the most common are nausea (33% of trial patients), diarrhea (21%), constipation (17%), vomiting (14%), and fatigue (7%). Injection-site reactions and headaches occur in a smaller percentage. Most GI side effects peak in the first 4-8 weeks and during each dose escalation, then improve as the body adapts. Less common but serious risks include pancreatitis, gallbladder problems (more common with rapid weight loss), kidney strain in dehydration, and hypoglycemia when combined with insulin or sulfonylureas. Zepbound carries the same black-box warning as Wegovy for thyroid C-cell tumor risk based on rodent studies; it is contraindicated in patients with personal or family history of medullary thyroid carcinoma or MEN2. Some patients report stronger Zepbound side effects than Wegovy at equivalent weight-loss-effectiveness doses; others tolerate it better.

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Drugs referenced

Related questions

  • Do Wegovy and Zepbound have the same side effects?

    Wegovy (semaglutide) and Zepbound (tirzepatide) share very similar side-effect profiles: nausea, constipation, diarrhea, vomiting, and fatigue, all most pronounced during dose escalation. Some patients report Zepbound nausea as stronger at equivalent weight-loss-effectiveness doses; others find Zepbound easier to tolerate. Both carry the same black-box warni

  • What are the most common Wegovy side effects?

    The most common Wegovy side effects are gastrointestinal: nausea (40-44% of trial patients), diarrhea (30%), vomiting (24%), and constipation (24%). These typically peak during dose escalation in the first 4-8 weeks and improve as the body adapts. Less common but serious risks include gallbladder problems, pancreatitis, kidney strain (especially if dehydrate

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