Retatrutide side effects
Retatrutide · retatrutide · by Eli Lilly
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.
Trial adverse events mirror the GLP-1 class (nausea, vomiting, diarrhea, dose-dependent), with attention in studies to heart-rate increase and tolerability at the top dose. Full safety profile pending Phase 3 completion.
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Frequently asked
What are the most common Retatrutide side effects?+
Trial adverse events mirror the GLP-1 class (nausea, vomiting, diarrhea, dose-dependent), with attention in studies to heart-rate increase and tolerability at the top dose. Full safety profile pending Phase 3 completion.
How long do Retatrutide side effects last?+
Most GI side effects (nausea, constipation) peak in the first 4-8 weeks of dose escalation and improve as the body adapts. Severe or persistent symptoms warrant a clinician call.
When should I stop Retatrutide?+
Stop and contact a clinician for severe abdominal pain, persistent vomiting, signs of pancreatitis, gallbladder symptoms, or any reaction outside the expected GI profile.