To find the number of units for Semaglutide, you need two things from your own vial: the milligrams (mg) of Semaglutide in the vial, and the amount of liquid (mL) you added to it. From those you work out the concentration, then convert your dose into syringe units. This page shows that arithmetic only. Semaglutide is an FDA-approved prescription medicine, so the dose, the schedule, and any changes belong entirely to your prescriber. This is a mixing-math tool for someone who already has a prescribed or compounded vial, not a dosing recommendation.
Semaglutide is a GLP-1 medicine that is approved by the U.S. Food and Drug Administration (FDA) and available by prescription. It is sold under brand names including Ozempic, Wegovy, and the oral tablet Rybelsus. Because it is a prescription medicine, the decision about whether to use it, how much to use, and how to adjust over time belongs to your physician and pharmacist. Pepathary does not recommend Semaglutide, any dose, or any source. It is a free, offline, educational tracker. If you want background on GLP-1 medicines, see our GLP-1 guide and bring your questions to your prescriber.
A Semaglutide vial that arrives as a powder is commonly reconstituted with bacteriostatic water as the diluent. If your vial came already mixed, no reconstitution is needed at all. Always follow the exact instructions printed on your vial and given by your pharmacist.
One helpful point: the choice of diluent does not change the concentration math. The concentration depends only on how many milligrams of Semaglutide are in the vial and how many milliliters of liquid you add. The kind of water affects shelf life and comfort, not the units-per-dose calculation below.
The two steps are always the same:
The numbers below are neutral examples of the arithmetic only. They are not a recommended dose and your vial may differ. Confirm your own figures with your pharmacist.
Example A (example only, not a recommendation): Suppose a vial holds 5 mg of Semaglutide and you added 2 mL of bacteriostatic water. Concentration = 5 multiplied by 1000, divided by 2 = 2500 mcg/mL. If the prescribed dose were 250 mcg, the math would be: 250 divided by 2500, multiplied by 100 = 10 units.
Example B (example only, not a recommendation): Suppose a vial holds 10 mg and you added 1 mL. Concentration = 10 multiplied by 1000, divided by 1 = 10,000 mcg/mL. If the prescribed dose were 500 mcg, the math would be: 500 divided by 10,000, multiplied by 100 = 5 units.
Notice that the same dose gives different units depending on how the vial was mixed. That is why you must always run the math for your vial. Commonly-reported vial sizes and amounts exist online, but those are educational reference points, not a recommendation. Confirm with your physician or pharmacist.
This page does not tell you what dose to take, when to take it, or how to increase it over time. For a prescription GLP-1 medicine like Semaglutide, that is your prescriber's job, and getting it wrong can be harmful.
Pepathary is an educational tracker, not medical advice and not a medical device. It does not sell or source any medicine.
It depends entirely on how concentrated your vial is, so there is no single answer. First find your concentration (vial mg multiplied by 1000, divided by water mL), then divide your dose in mcg by that number and multiply by 100. As a neutral example only: 0.25 mg is 250 mcg, and at 2500 mcg/mL that works out to 10 units, but your vial may be mixed differently. Confirm the figure for your own vial with your pharmacist.
There is no universal amount, and Pepathary does not recommend one. The diluent volume is set by how your vial was supplied and your pharmacist's instructions. Whatever volume you add changes the concentration and therefore the units per dose, so follow your vial's directions exactly and confirm with your pharmacist before mixing.
Yes. Semaglutide is an FDA-approved prescription medicine, sold under brands including Ozempic, Wegovy, and the oral tablet Rybelsus. Because it is prescription-only, your dose and schedule are decided by your prescriber, not by a calculator. See our GLP-1 guide for background and bring your questions to your physician.
No. The units depend only on the milligrams of Semaglutide in the vial and the milliliters of liquid you added. The kind of diluent affects shelf life and injection comfort, not the concentration math. Always follow the diluent instructions on your vial and from your pharmacist.