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GIP receptor agonists activate both GLP-1 and GIP receptors

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Key Takeaways Starting dose: 2 mg once weekly for 4 weeks Titration pace: Increase every 4 weeks: 2 4 8 12 mg Maximum dose: 12 mg weekly (Phase 2/3 clinical trial protocol) Total ramp-up: ~16 weeks to reach maximum dose Mechanism: Triple agonist (GLP-1 + GIP + Glucagon), the only triple-agonist in late-stage trials Weight loss: Up to 24.2% at 48 weeks (Phase 2) and 28.7% at 68 weeks (Phase 3 TRIUMPH-4) GLP-3 Retatrutide Dosage Chart Free printable reference chart showing the retatrutide (GLP-3) clinical trial titration schedule from 2 mg to 12 mg weekly

Badi RM, Khaleel EF, El-Bidawy MH, Satti HH, Mostafa DG

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TRT offsets this effect by supporting cellular energy production and enhancing the drive to remain active