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GLP-1 microdosing side effects

You are trying to work out how much to draw or when to step up.

Reference and calculator, not medical advice. This page explains how something works; it does not tell you what to take. Last reviewed August 2026.

Microdosing is not a concept that appears in any approved label. Every schedule on this site is transcribed from prescribing information, and none of those documents describes a sub-therapeutic maintenance dose — the lowest number in each is a starting dose on the way up, held for a fixed interval and then increased. So there is no labelled microdose to quote, and no trial designed around one to cite.

On side effects specifically: the adverse reaction rates in every label were measured at labelled doses. Extrapolating them downwards is an assumption rather than a finding, and it does not only run in the reassuring direction — a small dose held indefinitely is a different exposure pattern from a larger dose reached by escalation, and neither the rates nor the pattern have been studied at this level.

mg → syringe units converter

U-100 syringe. Formula: (dose ÷ concentration) × 100.

12.5units on a U-100 syringe
= 0.125 mL  ·  2.5 mg at 20 mg/mL

Check the concentration printed on the vial you are actually holding. The same dose in milligrams is a completely different mark on the syringe at a different concentration. If the number here does not match what your prescriber told you, trust your prescriber.

Compounded vs brand-name: what actually differs

Current as of August 2026.

Compounded is usually cheaper but can change with the rules; brand-name costs more and is more predictable. Worth raising with whoever writes your prescription. FDA’s compounding pages have the detail if you want it.

Every product above holds each step before the next increase, and that spacing is the whole design — it is what keeps gastrointestinal effects manageable while the dose climbs. Which product and which step suit you is a prescribing decision, not a comparison you can finish here.

Sources and last review

This page is general reference rather than a dosing table, so it quotes no figures from a label. Nothing here is reviewed by a clinician, and this site does not employ one — which is exactly why what I do publish stays traceable to its source.

Transcribed from the labels above and checked by me — Gavin, who builds this site, takes a GLP-1, and is not a clinician. Last reviewed August 2026. Found an error? [email protected] — I treat corrections as bugs. How this site is built and funded.

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