How many units is 0.25 mg of semaglutide?
It depends on exactly one thing: the concentration printed on your vial. Here it is
at the 4 strengths compounded semaglutide usually comes in, and drawn on the barrel.
At 1 mg/mL, 0.25 mg is 25 units (0.25 mL). At 2.5 mg/mL, 0.25 mg is 10 units (0.1 mL). At 5 mg/mL, 0.25 mg is 5 units (0.05 mL). At 10 mg/mL, 0.25 mg is 2.5 units (0.025 mL).
What that looks like on the barrel
1 mg/mL → 25 units on a 30-unit syringe
2.5 mg/mL → 10 units on a 30-unit syringe
5 mg/mL → 5 units on a 30-unit syringe
10 mg/mL → 2.5 units on a 30-unit syringe
About this dose
Weeks 1–4. The first four weeks. It does almost nothing except let your gut get used to the idea.
It's also the dose most likely to be too small to measure: at 5 mg/mL it's 5 units, at 10 mg/mL
it's 2.5 — a sliver barely off the hub, where half a mark is a 20 % error. 2.5 mg/mL (10 units) or
1 mg/mL (25 units) put it somewhere you can see.
Check it yourself
The whole sum is units = dose ÷ concentration × 100. For this dose at
1 mg/mL: 0.25 ÷ 1 × 100 = 25. If your
vial isn't marked in mg/mL, the concentration is the vial's total milligrams divided by the water
that went in — a 2 mg vial with 2 mL of water is 1 mg/mL.
Not one of those concentrations?
Common setups: