GLP-3 + Cagri
Typical Dosing Protocols (Research/Compounded Use Only) – Retatrutide + Cagrilintide (Stack)
Common protocol:
Retatrutide: Start at 1–2 mg subcutaneously once weekly, titrate every 4 weeks up to 8–12 mg weekly.
Cagrilintide: Start at 0.6 mg subcutaneously once weekly, titrate every 2–4 weeks up to 2.4–4.5 mgweekly.
Both peptides are typically injected on the same day each week (e.g., Monday morning).
Other reported ranges:
Retatrutide: 4–12 mg weekly (most common maintenance 8–12 mg)
Cagrilintide: 2.4–4.5 mg weekly
Many users combine 8 mg Retatrutide + 2.4 mg Cagrilintide or 12 mg Retatrutide + 4.5 mg Cagrilintidefor aggressive fat loss.
Reconstitution example:
Retatrutide (10–20 mg vial): Add 2 mL bacteriostatic water.
Cagrilintide (5–10 mg vial): Add 2 mL bacteriostatic water.
Draw both into the same insulin syringe for a single weekly injection.
Administration: Subcutaneous injection (abdomen, thigh, or upper arm). Slow titration is strongly recommended to minimize GI side effects.
Dosing is highly individualized based on goals, tolerance, and response—consult a qualified healthcare provider experienced with incretin therapies for personalized guidance. This is for informational purposes only.
Key Potential Benefits of the Combination
Potent Weight Loss (Potentially the Strongest Yet)
Retatrutide monotherapy (Phase 2/3 data): Up to 24%+ body weight reduction at 48 weeks (highest doses), with continued loss and no clear plateau in many participants. This rivals or exceeds bariatric surgery in some studies.
Cagrilintide alone: ~10–12% weight loss.
When Cagrilintide is added to a GLP-1 agonist (as in CagriSema trials): Average 20–23% weight loss over 68 weeks, outperforming either agent alone.
Theoretical stack advantage: Adding amylin agonism (Cagrilintide) to Retatrutide’s triple action could target four complementary pathways (GLP-1, GIP, Glucagon, + Amylin), potentially driving even greater appetite suppression, energy expenditure, and fat loss.
Enhanced Satiety & Appetite Control
Cagrilintide acts on amylin receptors in the brain to promote profound feelings of fullness and reduce food intake.
Retatrutide already provides strong GLP-1/GIP-driven satiety plus glucagon effects on energy use.
Together: Multi-pathway reinforcement of hunger signals, which may help with cravings and adherence.
Improved Metabolic Health & Glycemic Control
Significant reductions in HbA1c (up to ~2% with Retatrutide or similar dual combos).
Better insulin sensitivity, reduced liver fat, and improvements in lipids/blood pressure.
Potential benefits for prediabetes reversal and Type 2 diabetes management.
Additional Cardiometabolic & Body Composition Benefits
Reductions in waist circumference, systolic blood pressure, and inflammatory markers.
Glucagon component in Retatrutide may support increased energy expenditure and fat oxidation (while the stack helps preserve lean mass better than calorie restriction alone).
Possible Synergistic Advantages Over Monotherapy
Broader coverage of hunger/satiety pathways → potentially less compensatory hunger or plateaus.
Complementary effects on gastric emptying, energy metabolism, and tissue-level changes.
