⏳ Time & Supply
Vial Duration Calculator
Calculate exactly how many days a single vial will last, view your usage on a calendar, and instantly know your estimated refill date.
Dosage Parameters
Duration Results
This Vial Will Last
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0 weeks
Est. Refill Date
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from today
Total Uses
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injections per vial
mg per Week
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mg/week average
Uses per Month
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avg uses/month
Managing Supply
Best practices for maintaining your research compound schedule.
Plan Ahead
Always order your refill 1-2 weeks before your estimated empty date to account for shipping delays or out-of-stock situations.
Storage Limits
Reconstituted peptides generally begin degrading after 30-45 days even when refrigerated. If your vial lasts longer, consider mixing smaller batches.
Dead Volume
Syringes often have a small amount of "dead volume" (liquid left in the needle). If you are pulling many small doses from one vial, you may run out slightly sooner.