A 2ml vial of semaglutide typically lasts 4-6 weeks depending on dosage
A 2ml vial of semaglutide contains 5mg of the medication. The duration depends on your prescribed dose, which ranges from 0.25mg to 2.4mg weekly. At the starting dose of 0.25mg, a 2ml vial lasts approximately 6 weeks. At the maximum dose of 2.4mg, it lasts about 4 weeks. Most patients reach their maintenance dose by week 16 of treatment.
Semaglutide dosage and duration comparison
| Dosage (mg/week) | Weeks per 2ml vial | Monthly cost estimate |
|---|---|---|
| 0.25 | 6 weeks | Lowest |
| 0.5 | 5 weeks | Low |
| 1.0 | 4 weeks | Medium |
| 1.7 | 3 weeks | High |
| 2.4 | 4 weeks | Highest |
Factors affecting how long your semaglutide vial lasts
- Starting dose: Most patients begin at 0.25mg and increase weekly
- Maintenance dose: Final dose varies by individual needs and response
- Pen type: Some pens deliver 0.25mg per click, others 0.5mg
- Storage: Vial must be refrigerated; improper storage affects potency
Typical titration schedule for semaglutide
- Weeks 1-4: 0.25mg weekly
- Weeks 5-8: 0.5mg weekly
- Weeks 9-12: 1.0mg weekly
- Weeks 13-16: 1.7mg weekly
- Week 17+: 2.4mg weekly (maintenance)
Tips for managing your semaglutide supply
Track your weekly dose and calculate when you'll need a refill. Many patients find their vial lasts 5-6 weeks during titration but only 4 weeks at maintenance dose. Consider setting calendar reminders for reordering to avoid gaps in treatment. Some pharmacies offer auto-refill programs to ensure consistent supply.