What's the Difference Between Cagrilintide and Eloralintide? Cagrilintide and Eloralintide are both long-acting amylin receptor agonists—peptides designed to mimic aspects of the natural hormone amylin to reduce appetite and increase satiety—but they differ significantly in their receptor selectivity and clinical development profiles. Receptor Selectivity Cagrilintide: Acts as a broader, non-selective amylin analogue. It activates multiple receptors across the amylin/calcitonin receptor family, including AMY1, AMY2, AMY3 and the calcitonin receptor. Eloralintide: Acts as a selective amylin receptor agonist developed by Eli Lilly. Rather than broadly activating the receptor family, Eloralintide preferentially targets the AMY1 receptor, with substantially greater activity at AMY1 than at the calcitonin receptor. That distinction—broad receptor activity versus preferential AMY1 activity—is one of the major reasons I find Eloralintide interesting. Clinical Trials and Administration Cagrilintide: Has been evaluated as a monotherapy and is also being developed in combination with other incretin-based therapies, most notably semaglutide as CagriSema. Cagrilintide broadly activates multiple amylin receptor complexes as well as the calcitonin receptor. Eloralintide: Has been evaluated as a once-weekly standalone subcutaneous injection, including a 48-week Phase 2 study that demonstrated substantial, dose-dependent reductions in body weight. Eloralintide is a highly selective amylin receptor agonist engineered by Eli Lilly to preferentially target the human AMY1 receptor rather than broadly activating the entire amylin/calcitonin receptor family. The theory behind that selectivity is particularly interesting: preserve strong amylin-mediated satiety signaling while potentially producing a different tolerability profile than broader amylin receptor activation. Side Effects Both Cagrilintide and Eloralintide influence appetite and satiety signaling, and gastrointestinal effects are prominent adverse events reported with this class.