This Semaglutide calculator shows how many units to draw after reconstituting a Semaglutide vial. It includes common vial sizes, half-life, and storage notes.
Semaglutide at a glance
| Class | GLP-1 receptor agonist |
| Status | FDA-approved (Ozempic®, Wegovy®) |
| Typical vial sizes | 2 mg, 5 mg, 10 mg |
| Half-life | About 7 days (≈165 hours) |
| Molecular weight | 4,113.6 g/mol |
| Storage | Pens and unopened product: refrigerate 2–8 °C. Research vials: Lyophilized: freeze at −20 °C for long-term storage or refrigerate at 2–8 °C short term. Reconstituted: refrigerate at 2–8 °C, protect from light, do not freeze. |
How to use the Semaglutide Calculator
- Enter the vial size, or tap a preset.
- Enter the bac water added, or tap a preset.
- Enter the desired dose and choose mcg or mg.
- Choose the syringe type.
- Read the result card. It updates as you type, and you can copy or share it.
About this calculator
Semaglutide is a gLP-1 receptor agonist. Status: FDA-approved (Ozempic®, Wegovy®). The presets above reflect the vial sizes and water volumes most often used for Semaglutide.
The math is the same as the general reconstitution calculator. Only the presets and reference data change.
Frequently asked questions
What vial sizes does Semaglutide come in?
Commonly 2 mg, 5 mg, 10 mg. Always use the amount printed on your vial.
How should Semaglutide be stored?
Pens and unopened product: refrigerate 2–8 °C. Research vials: Lyophilized: freeze at −20 °C for long-term storage or refrigerate at 2–8 °C short term. Reconstituted: refrigerate at 2–8 °C, protect from light, do not freeze.
What is the half-life of Semaglutide?
About 7 days (≈165 hours).
Sources
- Wegovy (semaglutide) injection: prescribing information. DailyMed, National Library of Medicine.
- Ozempic (semaglutide) injection: prescribing information. DailyMed, National Library of Medicine.
- General Chapter <797> Pharmaceutical Compounding: Sterile Preparations. U.S. Pharmacopeia.
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Medical disclaimer. This calculator is for educational purposes only and is not medical advice. Results are mathematical estimates based on the values you enter. Many peptides listed here are not approved by the FDA for human use. Confirm every dose with a licensed healthcare provider or your approved study protocol, and follow the product label.
