Work out refill due date instantly with clear inputs, formula shown and shareable results.
Counts forward from the dispensing date to the run-out date and sets a reminder date the chosen number of days earlier.
Refill timing
Run-out date = date dispensed + days supply; refill date = run-out date - reminder lead time
Educational estimate only. Not a substitute for professional clinical judgement, and must not be used to make treatment or dosing decisions.
Most insurers allow refills once about 75 to 80% of the previous supply has elapsed.
They usually have tighter early-refill rules and may not be dispensed ahead of time at all.