A non-powder-form freeze-dried composition for transpulmonary
administration has a disintegration index greater than or equal to 0.015
and contains at least one active ingredient. The composition becomes fine
particles upon receiving air impact at an air speed greater than or equal
to 1 meter/second and an air flow rate greater than or equal to 17
milliliters/second. The fine particles have a mean particle diameter less
than or equal to 1.times.10.sup.-5 meters and/or a fine particle fraction
greater than or equal to 10%. A method of making the composition, a
vessel containing the composition, a method of administering the
composition, a dry powder inhalation system for transpulmonary
administration, and a method of transpulmonary administration are also
disclosed.