Quantity to Dispense for a Days Supply
Quantity to dispense for a days supply, rounded up to whole units and packages.
Open the tool → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Dosage form
- Insulin pen or vial
- Days supply wanted
- 30 days
- Insulin: units injected per day
- 40 units
- Insulin: injections per day
- 2
- Insulin: priming units per injection
- 2 units
- Insulin: units per mL
- 100
- Insulin: mL per pen or vial
- 3 mL
- Package size
- 5
Result: 5 pens or vials for 30 days.
The tool opens with these values already filled in. Replace them with your own.
What you enter
- Dosage form
- Days supply wanted (every form but a taper)
- Tablets or capsules: units per dose
- Doses per day (tablets, liquid, inhaler, drops)
- Taper: one step a line as units per dose, doses per day, days
- Liquid: dose volume
- Insulin: units injected per day
- Insulin: injections per day
The other 15 fields
- Insulin: priming units per injection (from the label)
- Insulin: units per mL
- Insulin: mL per pen or vial
- Insulin: in-use discard limit, if the label gives one
- Inhaler: puffs per dose
- Inhaler: actuations per canister
- Inhaler: priming puffs per canister (optional)
- Drops: drops per eye per dose
- Drops: eyes treated
- Drops: drops per mL (manufacturer or plan figure)
- Patches: time between changes
- Patches: that time is in
- Patches: worn at once
- Supplies: uses per day
- Package size: units, mL, pens, canisters or patches in one (optional)
How this is calculated
Citation
Stated arithmetic on the prescription and the label: quantity is daily use times days, rounded up to the unit that can be dispensed. Priming units, drops per mL, actuations and package sizes are the reader's entries; no figure is supplied.
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.