GLP-1 Microdosing Explained
GLP-1 microdosing means using semaglutide, tirzepatide, or retatrutide at doses well below standard therapeutic targets, aiming for a gentler effect with fewer side effects. Protocols use either a slow low-dose ladder or an extended hold at a single small dose. Reconstituting with more water makes these tiny draws easier to measure.
For educational and research purposes only. Not medical advice. Always consult a licensed healthcare professional before starting any protocol.
What microdosing means here
Microdosing is using a GLP-1 at a fraction of the usual therapeutic dose. Where standard semaglutide use is often reported starting at 0.25 mg weekly, microdosing reports describe beginning near 0.05 to 0.125 mg. The stated goal is a milder appetite and metabolic effect while minimising the gastrointestinal side effects that come with larger doses. These figures are community-reported, not recommendations.
Microdosing is a community practice rather than an approved protocol, so everything here is educational. Retatrutide in particular is investigational and research-only.
Gentle ladder vs extended hold
There are two common approaches. A gentle ladder starts very low and steps up in small increments with longer holds than a standard titration, letting you find the lowest effective dose. An extended hold skips escalation entirely: you settle at one comfortable low dose and stay there indefinitely.
Which you choose depends on your goal. A ladder suits people still searching for their effective dose; an extended hold suits people who have already found a small dose that works and want to maintain it.
Measuring tiny draws accurately
Microdoses translate into very small volumes, sometimes only one or two units, which are hard to measure precisely. Reconstituting with more bacteriostatic water lowers the concentration and spreads the same dose across more units, making the draw easier to read. A 0.3 mL insulin syringe with its fine markings also helps. The microdosing calculator converts a low dose into exact units and warns you when a draw is impractically small.
Frequently asked questions
How much semaglutide is a microdose?
Community protocols often start semaglutide around 0.05 to 0.125 mg weekly, well below the standard 0.25 mg start. At 2.5 mg/mL, 0.05 mg is 0.02 mL, or about 2 units on a U-100 syringe.
Is microdosing more effective than standard dosing?
No. Microdosing aims for a gentler effect with fewer side effects, not a stronger one. It is a lower-dose approach, and it is not an approved protocol, so treat it as educational.
What is an extended hold?
An extended hold means staying at a single low microdose indefinitely with no escalation, instead of climbing a ladder. It suits people who have already found a comfortable maintenance dose.
How do I measure such a small dose?
Reconstitute with more water to lower the concentration so the dose spans more units, and use a 0.3 mL syringe for its finer markings. The microdosing calculator flags draws that are too small to measure reliably.
Related tools
GLP-1 Microdosing Calculator
Free semaglutide, tirzepatide, and retatrutide microdosing calculator. Get a gentle low-dose ladder or an extended-hold single dose, with the exact units to draw on a to-scale insulin syringe.
GLP-1 Dose & Titration Calculator
Free dose calculator for semaglutide and tirzepatide. Get a week-by-week titration schedule with the exact units to draw on a to-scale insulin syringe.