unit dose

A unit dose is a single, separately packaged amount of medicine, ready to give for one administration without measuring or counting: one blister-sealed tablet, one foil-wrapped suppository, one sealed ampoule of injection. Each package holds exactly one dose.

Unit-dose presentation reduces dosing errors and contamination because no one has to count loose tablets or draw up liquid from a shared container. In hospitals it streamlines dispensing and lets unused doses return to stock intact; for patients it makes adherence easier to track.

Not every dosage form is a unit dose. A bulk bottle of syrup from which spoonfuls are measured is a multi-dose container, not a unit dose. The cost of individual packaging is the trade-off against the safety and convenience it brings, so unit-dose formats are most common where accuracy and sterility matter most.