Based on the phase 2 and phase 3 trial protocols: Weeks 1-4: 1 mg once weekly Weeks 5-8: 2 mg once weekly Weeks 9-12: 4 mg once weekly Weeks 13-16: 8 mg once weekly Weeks 17 onward: 12 mg once weekly (maximum dose) The starting dose of retatrutide is deliberately low because the triple-agonist mechanism produces more intense initial side effects than single-pathway compounds
Form: Subcutaneous injection Strength: 0.25 mg or 0.5 mg dose pen 1 mg dose pen 2 mg dose pen 2
The peptide therapy online guide discusses how telemedicine providers can help coordinate multi-medication management, and the testing labs guide covers how to monitor your markers during treatment
The group also had close ties with anatomists and physiologists at the University of Lund with considerable expertise in endocrine cells of the gastrointestinal tract (Holst 2024)
Why diet matters on GLP-1s GLP-1 medications and dual incretin medications (for example semaglutide and tirzepatide) can increase fullness and slow digestion, which can reduce cravings and portion sizes, but may also trigger GI side effects like nausea, vomiting, heartburn, bloating, diarrhea, and constipation, especially during dose increases
Orlistat users should check with their individual insurance companies to see if these costs are eligible for reimbursement