Semaglutida Berberina

Understanding the Retatrutide Dosing Protocol: A 2026 Guide

As the pharmaceutical industry moves toward multi-receptor agonists for weight management, retatrutide stands out as the first triple-agonist to reach Phase 3 trials. Here’s what healthcare providers need to know about dosing.

The 20-Week Titration

The Phase 2 NEJM trial established a gradual escalation protocol designed to minimize gastrointestinal side effects while optimizing therapeutic response:

• Weeks 1-4: 1mg (initiation)
• Weeks 5-8: 2mg (low dose)
• Weeks 9-12: 4mg (therapeutic entry — 17% weight loss in trials)
• Weeks 13-16: 8mg (therapeutic — 22% weight loss)
• Weeks 17+: 12mg (maximum — 24.2% weight loss)

Practical Considerations

Reconstitution follows standard peptide protocols. At 10mg/mL concentration, a 4mg dose equals 0.40mL or 40 units on a standard insulin syringe. Vials should be stored at 2-8°C after reconstitution and used within 28 days.

For complete syringe unit tables covering 10mg through 60mg vials, see the comprehensive dosing guide at Glunova Biotech.

Cost Planning

Compounded retatrutide ranges from $200-650/month. Bulk vials (30mg, 60mg) offer significantly lower per-milligram costs. Clinics serving multiple patients benefit from coordinating orders. More pricing details: retatrutide cost guide.