Enter the prescription
Do not automatically subtract priming sprays. Use this only when the product-specific information and approved billing procedure require an adjustment.
Calculation result
Days' supply
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Enter the prescription and calculate.
Formula:
total usable units ÷ daily use
Interpretation
The result will state whether it is a scheduled calculation or a maximum-use PRN estimate.
Calculation cautions
- For PRN directions, actual use cannot be predicted. The shortest permitted interval produces a maximum-use estimate.
- Directions based only on exercise, symptoms, or an unstated frequency may require clarification.
- A fractional quotient may be handled differently by different claim systems. This tool displays the exact quotient and the calendar depletion day.
- Verify package count, device type, dose counter, opening discard period, and current labeling.
- Do not use extra maintenance-inhaler doses unless the regimen specifically supports them.