Cagrilintide vs Exenatide
A neutral, side-by-side comparison of two glp-1 & metabolic peptides — their mechanisms, dosing ranges, administration routes, side effects, and research evidence. For research and educational purposes only.
Cagrilintide
Long-acting amylin/CGRP receptor co-agonist developed by Novo Nordisk. Reduces food intake and body weight via central satiety pathways distinct from the GLP-1 pathway. In the CagriSema combination trial with semaglutide, the combination achieved up to ~25% weight reduction — substantially greater than either agent alone.
Full profileExenatide
First GLP-1 receptor agonist approved for clinical use (2005), derived from the Gila monster venom peptide exendin-4. Available as twice-daily immediate-release (Byetta) and once-weekly extended-release (Bydureon BCise) formulations. Established the GLP-1 agonist drug class and provided the foundational clinical evidence for cardiovascular and metabolic benefits.
Full profile| Cagrilintide | Exenatide | |
|---|---|---|
| Category | GLP-1 & Metabolic | GLP-1 & Metabolic |
| Also known as | AM833, amylin analogue, CagriSema partner | Byetta, Bydureon, AC2993, exendin-4 |
| Evidence | Investigational (in trials) | FDA-approved |
| Dosing range | 0.3mg–2.4mg mg, once weekly subcutaneous | 5mcg–2mg (weekly ER) mcg, Twice daily (immediate-release) or once weekly (extended-release) |
| Administration | Subcutaneous injection | Subcutaneous injection |
| Key side effects | Nausea, Vomiting, Injection site reactions, Decreased appetite | Nausea (most common, especially initial weeks), Vomiting, Diarrhea, Injection site nodules (extended-release formulation) |
| Cited sources | 2 references | 2 references |
Key differences
- Evidence level differs: Cagrilintide is investigational (in trials), while Exenatide is fda-approved.
- Dosing units differ: Cagrilintide is dosed in mg, Exenatide in mcg — they operate at different scales.
- Frequency: Cagrilintide is typically once weekly subcutaneous; Exenatide is Twice daily (immediate-release) or once weekly (extended-release).
How each works
Cagrilintide
Cagrilintide activates amylin receptors (RAMP/CTR complexes) in the area postrema and hypothalamus, reducing food intake and slowing gastric emptying through mechanisms independent of GLP-1 signaling. This non-overlapping pathway allows combination with semaglutide without compounding GI side effects. Phase 2 CagriSema data showed 15–25% weight loss at 32 weeks, supporting the complementary mechanism hypothesis.
Exenatide
Exenatide was identified from Gila monster (Heloderma suspectum) venom as exendin-4, a peptide with ~53% homology to human GLP-1 but with DPP-4 resistance enabling longer activity. Clinical trials demonstrated HbA1c reductions of 0.8–1.0%, weight loss of 2–4kg, and cardiovascular safety (EXSCEL trial showed non-inferiority). The extended-release microsphere formulation achieved comparable efficacy with once-weekly dosing.
This comparison aggregates public research and structured profile data for informational purposes only. It is not medical advice and does not recommend either compound for human use. Consult a qualified healthcare provider before considering any peptide.