GLP-1 · DOSAGE CALCULATOR
Semaglutide Dosage Calculator
Compounded semaglutide comes as a lyophilized vial you reconstitute yourself, and the weekly dose steps up over months. Enter your vial strength, water volume, and current dose to see the draw in units.
INPUT VALUES
Peptide vial size
5 mg
Total Semaglutide in your vial
Bacteriostatic water
2 mL
Amount of BAC water added
Desired dose
0.25 mg
Labelled titration runs 0.25 → 0.5 → 1 → 1.7 → 2.4 mg weekly, typically stepping every four weeks.
RESULT · AUTO-CALCULATED
Draw to
units on a U-100 insulin syringe · 0.1 mL
- Concentration
- 2500 mcg/mL
- Volume per dose
- 0.1 mL
- mcg per unit
- 25 mcg
- Doses per vial
- 20
Educational only. Reconstitution math is provided to help you follow the instructions from your prescribing provider — it is not a dosing recommendation. Always use the dose your provider prescribed.
About Semaglutide dosing
Semaglutide is a GLP-1 receptor agonist taken once a week. It slows gastric emptying and acts on appetite signalling in the brain, which is why the dose is increased gradually — the escalation schedule is what keeps nausea manageable.
A 5 mg vial in 2 mL is 2.5 mg per mL, so the 0.25 mg starting dose is 0.1 mL — 10 units. At the 2.4 mg maintenance dose the same vial gives roughly two doses, which is why larger vials are common later in treatment.
Semaglutide is a prescription medication. The dose, the escalation pace, and whether it is appropriate for you are decisions for a licensed provider; this calculator only turns a prescribed dose into a syringe measurement.
How do I reconstitute compounded semaglutide?
Add the bacteriostatic water your pharmacy specifies slowly down the side of the vial, swirl until clear, and refrigerate. 2 mL for a 5 mg vial (2.5 mg/mL) keeps the early doses at easy-to-read unit counts; enter your own volume above.
What is the typical starting dose for semaglutide?
The labelled schedule starts at 0.25 mg once weekly for four weeks, then 0.5 mg, 1 mg, 1.7 mg, and 2.4 mg, each step usually held for at least four weeks. Compounded protocols vary; your provider sets your schedule.
How long does reconstituted semaglutide last?
Follow your pharmacy's beyond-use date, commonly 28 days refrigerated. Because doses climb, a 5 mg vial covers many weeks at 0.25 mg but only about two doses at 2.4 mg, so plan refills around the step you are on.
NOT SURE WHERE TO START?
Talk to a licensed provider about your goals.
G1 does not currently carry Semaglutide. A free telehealth consultation is the fastest way to find out what is right for you and what is available.