Retatrutide dosage by bodyweight
Reference dose ranges scaled across bodyweight bands, anchored to the most-cited research dose (2000 mcg @ 75 kg). Educational only, never a recommendation.
| Bodyweight band | Reference dose range | At U-100 (1 mg/mL) | Vol. on U-100 (5 mg / 2 mL) | 5× t½ elapsed |
|---|---|---|---|---|
| <60 kg / <132 lb | 1247–1687 mcg | 1.25–1.69 mL | 50–68 units0.50–0.67 mL | 30 d |
| 60–75 kg / 132–165 lb | 1530–2070 mcg | 1.53–2.07 mL | 61–83 units0.61–0.83 mL | 30 d |
| 75–90 kg / 165–198 lb | 1870–2530 mcg | 1.87–2.53 mL | 75–101 units0.75–1.01 mL | 30 d |
| 90–105 kg / 198–231 lb | 2210–2990 mcg | 2.21–2.99 mL | 88–120 units0.88–1.20 mL | 30 d |
| >105 kg / >231 lb | 2550–3450 mcg | 2.55–3.45 mL | 102–138 units1.02–1.38 mL | 30 d |
Volume column assumes a standard 5 mg vial reconstituted with 2 mL bacteriostatic water (concentration 2.5 mg/mL); insulin units shown for a U-100 syringe. Five half-lives is the conventional washout window where ~3% of peak plasma remains, a useful "next dose due" anchor for Retatrutide (t½ 6.0 d).
Retatrutide by goal
Read Retatrutide's profile and dosing through a specific research-goal lens.
Dose & PK references
Selected from the Retatrutide bibliography for relevance to dosing and pharmacokinetics.
Educational use only
This calculator is provided for research and educational purposes. Outputs are derived from the values you enter. Always verify your math and consult a licensed physician before acting on any result.