GLP-1 Microdosing Calculator
Compare once-weekly vs split dosing for Retatrutide, Tirzepatide, and Semaglutide to optimize steady-state plasma concentrations and minimize side effects.
Steady State Metrics
Peak vs Trough Variance
Critical Research Disclaimer
This calculator is for research and informational purposes only. Microdosing GLP-1 agonists is not clinically studied. These calculations are based on pharmacokinetic modeling, not clinical trials. Always consult a licensed physician before altering any dosage or frequency.
The Science Behind Microdosing
01What is GLP-1 Microdosing?
Microdosing GLP-1 agonists means splitting your weekly dose into 2–3 smaller injections throughout the week, rather than one large once-weekly dose.
For example, instead of injecting 6mg of Retatrutide once weekly, you might inject 3mg on Monday and 3mg on Thursday. Same total weekly dose, different pharmacokinetic profile.
02Peak-to-Trough Ratio
The key metric is the peak-to-trough (P/T) ratio — the difference between the highest drug level (right after injection) and the lowest (just before the next). A lower P/T ratio means more stable levels throughout the week.
Splitting into twice-weekly injections can reduce peaks by 28–38% for Retatrutide and Tirzepatide, and 20–28% for Semaglutide.
03Potential Benefits
- •Reduced peak nausea and GI side effects that spike in the first 24–48h after injection
- •More stable appetite suppression throughout the week — less “wearing off” effect
- •Easier dose adjustments with finer-grained control
!Why It's Not Proven
No clinical trials have studied split-dose GLP-1 protocols. This approach is based on pharmacokinetic modeling and anecdotal community reports, not randomized controlled data.
Splitting doses also means more injections. Always consult a healthcare provider before modifying any dosing protocol.
For research and educational purposes only. Not medical advice.
