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Semaglutide + Cagrilintide: the stack guide

By the Peptide Protocol editorial team · reviewed

Semaglutide plus Cagrilintide is the real clinical combination (branded CagriSema) that Novo Nordisk advanced into phase 3 trials. It pairs a GLP-1 receptor agonist with a long-acting amylin analog — two appetite-regulating pathways that are complementary rather than redundant.

Best forUsers who plateau on semaglutide alone, pursuing tirzepatide-range weight loss without switching classes, clinical replications of the CagriSema program.
CadenceIn the phase 2 CagriSema program, both compounds are titrated up in parallel to weekly doses of 2.
TagsFat loss Metabolic

Why Semaglutide and Cagrilintide pair well

Semaglutide slows gastric emptying and suppresses appetite via GLP-1 signaling. Cagrilintide is a long-acting amylin/calcitonin-family analog that further enhances satiety and slows gastric emptying through a different receptor system. In CagriSema trials, the combination produced weight loss approaching the magnitude seen with tirzepatide and retatrutide monotherapy.

Suggested cadence

In the phase 2 CagriSema program, both compounds are titrated up in parallel to weekly doses of 2.4 mg each, given subcutaneously. Real-world users replicating the combination typically match Semaglutide titration (0.25 → 2.4 mg) and introduce Cagrilintide at 0.16 mg, escalating alongside. Both are weekly injections; many stack them in one session for convenience.

This is informational only — dosing should always be individualized and discussed with a qualified clinician.

Reconstitution notes

Semaglutide: A common ratio is 2 ml of bacteriostatic water for a 5 mg vial. Open the Semaglutide calculator →

Cagrilintide: A common ratio is 2 ml of bacteriostatic water for a 5 mg vial. Open the Cagrilintide calculator →

Side effects to watch for

Side-effect profile is additive GLP-1-style GI — nausea, constipation, and occasional vomiting during titration. Tolerability in trials was comparable to semaglutide monotherapy. Watch injection-site reactions if combining in one session. Neither should be used during pregnancy or with a personal/family history of MTC.

The two compounds

Track this stack on iPhone

Peptide Protocol schedules both compounds, calculates reconstitution, and rotates injection sites automatically.

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Frequently asked questions

Why stack Semaglutide with Cagrilintide?

Semaglutide plus Cagrilintide is the real clinical combination (branded CagriSema) that Novo Nordisk advanced into phase 3 trials. It pairs a GLP-1 receptor agonist with a long-acting amylin analog — two appetite-regulating pathways that are complementary rather than redundant.

What is the typical Semaglutide + Cagrilintide dose?

In the phase 2 CagriSema program, both compounds are titrated up in parallel to weekly doses of 2.4 mg each, given subcutaneously. Real-world users replicating the combination typically match Semaglutide titration (0.25 → 2.4 mg) and introduce Cagrilintide at 0.16 mg, escalating alongside. Both are weekly injections; many stack them in one session for convenience.

Can you inject Semaglutide and Cagrilintide in the same syringe?

Many users co-administer GHRH + GHRP pairs (like CJC-1295 + Ipamorelin) in a single syringe to reduce injections, since both are stable in bacteriostatic water for short periods. For other pairs, draw and inject separately to minimize compatibility risk and to attribute any reaction to the correct compound.

What side effects should I watch for?

Side-effect profile is additive GLP-1-style GI — nausea, constipation, and occasional vomiting during titration. Tolerability in trials was comparable to semaglutide monotherapy. Watch injection-site reactions if combining in one session. Neither should be used during pregnancy or with a personal/family history of MTC.

How long should a Semaglutide + Cagrilintide cycle run?

Most user-reported cycles run 4–12 weeks depending on the goal. GH-axis stacks are typically cycled with a break of 4 weeks or more between blocks to preserve receptor sensitivity. Soft-tissue stacks are usually run continuously until the injury resolves.

Educational use only. Peptide Protocol is an informational tool. Nothing on this page constitutes medical advice. Many peptides are prescription-only or restricted in your jurisdiction. Always consult a licensed healthcare professional before injecting any compound.