Cagrilintide
peptide · headlineResearch use onlyAmylin receptor agonist
Overview
Cagrilintide is a novel, long-acting amylin analogue developed for weight loss and metabolic support. It works by mimicking the hormone amylin, enhancing satiety and reducing caloric intake. Clinical trials have demonstrated robust weight reduction, especially when co-administered with semaglutide. Still investigational, it shows promise in future obesity pharmacotherapy pipelines. It is often combined with GLP-1 agonists in research settings for additive effects on satiety
How it works
- Amylin receptor agonist
- Delays gastric emptying and suppresses glucagon
- Enhances satiety via CNS signaling
- Reduces food intake and modulates energy balance
Dosing
Start at 0.25 mg SQ weekly, titrate to 1.2 mg → 2.4 mg → 4.5 mg based on tolerance. Standard maintenance: 2.4 mg weekly. Phase 3 trials tested up to 4.5 mg for advanced weight management. Often paired with semaglutide (CagriSema protocol).
Caution: In clinical trials, cagrilintide has been dosed at 0.3–4.5 mg weekly. These findings apply only to research settings.
Cycling
- Inject once weekly; cycle continuously with physician monitoring. Adjust dose upward gradually based on GI tolerance and weight response. Often paired with GLP-1 analogues like semaglutide for synergy.
Side effects
- Common
- Nausea (47–55%), vomiting (26%), diarrhea, constipation, abdominal pain
- Warnings
- 79.6% GI events with CagriSema combo vs 39.9% placebo
Stacking & combinations
- With
Mazdutide
- Benefit
Enhanced weight loss effects when used with tirzepatide or semaglutide
Lifestyle support
- Diet
Balanced protein-forward diet. Monitor hydration and electrolytes for GI effects.
- Sleep
Adequate sleep (7–9 hours).
- Timing
Weekly injection. Consistent timing each week.
- Exercise
Resistance and aerobic activity.
Research studies
Studies summarized for educational purposes only. Inclusion does not imply human use; referenced research was conducted in vitro, in animal models, or in regulated clinical trials.
Once-weekly cagrilintide for weight management in people with overweight and obesity: a multicentre, randomised, double-blind, placebo-controlled and active-controlled, dose-finding phase 2 trial
Lau DCW, Erichsen L, Francisco AM, et al. Lancet. 2021;398(10317):2160–2172. View source ↗
This Phase 2 dose-finding trial randomized 706 adults with body mass index ≥30 (or ≥27 with weight-related comorbidities, without diabetes) across 57 sites in ten countries to once-weekly subcutaneous cagrilintide (0.3, 0.6, 1.2, 2.4, or 4.5 mg), liraglutide 3.0 mg daily, or placebo, over a 26-week treatment period that included up to 6 weeks of dose escalation. At week 26, mean percentage body-weight change was -10.8% at the 4.5 mg cagrilintide dose versus -3.0% with placebo and -9.0% with liraglutide 3.0 mg. Approximately 31% of participants in the 4.5 mg cagrilintide arm achieved ≥15% weight reduction versus 5.2% in placebo. The compound was generally well tolerated; the most common adverse events were gastrointestinal (nausea, decreased appetite) and consistent with the amylin receptor agonist mechanism.
A 26-week study tested five different weekly doses of cagrilintide against placebo and against a daily GLP-1 comparator in adults with overweight or obesity. The highest cagrilintide dose (4.5 mg weekly) produced an average body-weight reduction of about 10.8%, compared with about 3% on placebo. About one in three people on the top dose lost at least 15% of their starting weight. Side effects were mostly stomach-related and matched what would be expected from this class of compound.
Efficacy and safety of co-administered once-weekly cagrilintide 2·4 mg with once-weekly semaglutide 2·4 mg in type 2 diabetes: a multicentre, randomised, double-blind, active-controlled, phase 2 trial
Frias JP, Deenadayalan S, Erichsen L, et al. Lancet. 2023;402(10403):720–730. View source ↗
This Phase 2 trial evaluated the combination of cagrilintide 2.4 mg plus semaglutide 2.4 mg ("CagriSema") once weekly versus semaglutide 2.4 mg alone and cagrilintide 2.4 mg alone in adults with type 2 diabetes inadequately controlled on metformin (with or without an SGLT2 inhibitor). At week 32, the mean change in HbA1c from baseline was greater with the combination than with cagrilintide alone, and the mean change in body weight was greater with the combination than with either monotherapy. The safety profile of the combination was broadly consistent with the individual components, with gastrointestinal events the most frequently reported adverse events.
Researchers compared a weekly combination of cagrilintide plus semaglutide to each of the two compounds given alone, in adults with type 2 diabetes whose blood sugar wasn't well controlled on metformin. After 32 weeks, the combination produced larger reductions in average blood sugar (HbA1c) and larger body-weight reductions than either compound on its own. Side effects were mostly stomach-related, similar to either compound alone.
Verified citations
3 · PubMed-checked- Once-weekly cagrilintide for weight management: a phase 2 trial.clinicalPMID 34798060 ↗
- Development of Cagrilintide, a Long-Acting Amylin Analogue.mechanismPMID 34288673 ↗
- Cagrilintide: A Long-Acting Amylin Analog for the Treatment of Obesity.reviewPMID 36883831 ↗
Reconstitution calculator
Subcutaneous (SQ)= 0.2 mL on a U-100 insulin syringe
Assumes a U-100 insulin syringe (100 units = 1 mL). This is a preparation aid, not a protocol — dose and route are the prescriber's decision. Refrigerate at 2–8 °C (35.6–46.4 °F); use within 30 days and avoid freeze–thaw cycles
Chemistry & PK
- Sequence
- N/A
- Half Life
- Estimated 4–7 days supporting weekly dosing
- Degradation
- Metabolized primarily by proteolytic enzymes
- Molecular Weight
- 3962.33
- Molecular Formula
- C173H271N51O53S1
- Tissue Specificity
- Targets hypothalamic satiety centers and gastric pathways
Bioavailability
- In
- N/A
- Oral
- Not available orally; low oral bioavailability due to peptide degradation
- Subq
- High bioavailability through subcutaneous administration with effective weight-lowering effects.
Storage & handling
- Lyophilized
store frozen at −20 °C (−4 °F); after reconstitution, refrigerate at 2–8 °C (35.6–46.4 °F) and use within 30 days
- Reconstituted
Refrigerate at 2–8 °C (35.6–46.4 °F); use within 30 days and avoid freeze–thaw cycles
Legal / compounding
- EU
- Not Approved
- FDA
- Not Approved
- Canada
- Not Approved
- Australia
- Not Approved
Legal status is a hard gate: non-compoundable or delisted agents cannot be filled and are blocked from protocol export. Keep 503A status current.