Exenatide vs Dulaglutide
Side-by-side comparison of key properties, dosing, and research.
GLP-1 / Weight Loss AgonistsCognitive Enhancement
ExenatideGLP-1 / Weight Loss Agonists
Dulaglutide- Summary
- Exenatide is a GLP-1 receptor agonist derived from the Gila monster lizard peptide exendin-4, with 53% homology to human GLP-1 and natural resistance to DPP-4 degradation. Available as twice-daily (Byetta) or once-weekly (Bydureon) formulation, it is also being studied for Parkinson's disease neuroprotection.
- Dulaglutide (brand name Trulicity) is a once-weekly GLP-1 receptor agonist approved by the FDA for type 2 diabetes management and cardiovascular risk reduction. It consists of two GLP-1 analog chains fused to a modified IgG4 Fc fragment, extending its half-life to approximately 5 days. While primarily a diabetes medication, it produces meaningful weight loss and has established cardiovascular outcomes data from the REWIND trial.
- Half-Life
- ~2.4 hours (Byetta/twice-daily); Bydureon BCISE: weekly via microsphere release
- ~5 days
- Admin Route
- SubQ
- SubQ
- Research
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- Typical Dose
- 5 mcg, titrate to 10 mcg
- 0.75 mg → 1.5 mg
- Frequency
- Twice daily
- Once weekly
- Key Benefits
- Blood glucose control in type 2 diabetes
- Weight loss (average 2–3 kg in clinical trials)
- Once-weekly extended-release formulation available
- Reduces appetite and food intake
- Possible neuroprotective in Parkinson's disease (Phase II trials)
- Reduces systemic inflammation
- May protect pancreatic beta cells
- Cardiovascular neutral or potentially protective
- FDA-approved for type 2 diabetes
- Once-weekly subcutaneous dosing via auto-injector pen
- Reduces HbA1c by approximately 1.1–1.6%
- Modest weight loss of 1.5–3 kg at approved doses
- Demonstrated cardiovascular risk reduction (REWIND trial)
- Established long-term safety profile
- Renal protective effects in CKD
- Side Effects
- Nausea (most common, especially initially)
- Vomiting
- Diarrhea
- Headache
- +4 more
- Nausea (most common, typically transient)
- Diarrhea
- Vomiting
- Decreased appetite
- +3 more
- Stacks With
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