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Exenatide Side Effects and Safety

Reported Exenatide side effects, contraindications, and safety signals.

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Compiled from published research · Continuously updated

Common and Serious Risks

Nausea is the most common side effect, especially with Byetta's twice-daily dosing around meals. Other GI effects include vomiting and diarrhea. Serious risks include pancreatitis, and Bydureon carries the same rodent-derived medullary thyroid carcinoma boxed warning as other GLP-1s. Exenatide should be avoided in severe renal impairment, as it's cleared renally and doesn't have the albumin-binding protection some newer GLP-1s do.

Contraindications

  • severe renal impairment/ESRD
  • personal/family history of medullary thyroid carcinoma
  • pancreatitis
  • pregnancy
All Exenatide sections

Retatrutide

fat loss & metabolismAgrade

An investigational triple GIP/GLP-1/glucagon receptor agonist producing some of the largest average weight reductions reported for a single agent.

Liraglutide

fat loss & metabolismSgrade

A once-daily GLP-1 receptor agonist — the class predecessor to semaglutide and tirzepatide, still widely prescribed under Victoza and Saxenda.

Orforglipron

fat loss & metabolismSgrade

The first oral, non-peptide GLP-1 receptor agonist pill with no food or water restrictions — FDA-approved in 2026 as Foundayo.

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