Three clocks, earliest wins

A mixed medication runs on three clocks at once: the printed expiration date, the water vial's own period after first puncture, and the mixed medicine's period from its label. Type your dates; the tool shows which ends first.

The tool never estimates an expiration date: it is printed on each carton and vial and differs by lot. Dates stay on this device.

Arithmetic only, not a dose recommendation. This converts the numbers you typed and nothing more. If anything here does not match your prescription or your label, stop and ask your pharmacist.

Full notice

This tool does not choose or check a medication, dose, concentration, diluent, syringe or route. It works from the numbers on your prescription and label, as you type them. A mark on a U-100 syringe is a volume, not a medication dose in units or IU. If anything here differs from what you were given, or you are unsure, do not prepare or inject: ask the prescriber or the dispensing pharmacist. No preset is a dose. Presets exist for FDA-approved products; any other vial is arithmetic on your own label.