Patent ID: 7025205

Claim:
A pharmaceutical product comprising: (i) a pressurized MDI (metered dose inhaler) container comprising a drug, and an HFA (hydrofluoroalkane) propellant selected from the group consisting of HFA 134a and HFA p227, or a mixture thereof; (ii) an effective amount of an HFA adsorbent material; and (iii) a sealed package having an enclosed volume within which the pressurized container and the HFA adsorbent material are situated, wherein the sealed package is impermeable to the HFA propellant and the pressure within the enclosed volume of the package is equal to about ambient pressure; and wherein the HFA adsorbent material is capable of adsorbing the HFA propellant so as to maintain a constant pressure within said enclosed volume, when any leakage of the HFA propellant occurs from the pressurized container.