This invention relates to an inhalation device by which a user can inhale powdered pharmaceutical compositions or medications. Powdered medication is held in blister packs containing at least one or two separated pockets for two or more active pharmaceutical ingredients and is inhaled by users through inhalation devices. The invention also relates to an inhalation device for powdered pharmaceutical compositions comprising a medication blister pack containing two separated pockets to hold two active pharmaceutical ingredients, an opening station, and an outlet, the blister pack comprising two pockets for powdered medication contained between two members peelably secured to one another.
