Off Patent
January 2026

Primatene Mist

epinephrine

Armstrong Pharmaceuticals Inc

Aerosol, metered (inhalation) · NDA 205920

Last listed protection ended
January 26, 2026

The FDA listed 1 patent for Primatene Mist, and this is the day the last one ended. It is not the date a generic goes on sale.

Patents and exclusivities

  1. Ended
    Patent 8,367,734
    Claims the drug product