Carrier particles for use in dry powder inhalers

Details Carrier particles for use in dry powder inhalers Carrier particles for use in dry powder inhalers

2006-03-14

2006-03-14

Kunz, Gary (Department: 1616)

Drug, bio-affecting and body treating compositions

Effervescent or pressurized fluid containing

Organic pressurized fluid

C424S046000, C424S489000, C424S490000, C424S452000, C514S561000

Reexamination Certificate

active

07011818

ABSTRACT:
A powder for use in a dry powder inhaler includes active particles and carrier particles for carrying the active particles. The powder further includes additive material (4) on the surfaces of the carrier particles to promote the release of the active particles from the carrier particles on actuation of the inhaler. The powder is such that the active particles are not liable to be release from the carrier particles before actuation of the inhaler. The inclusion of additive material (4) in the powder has been found to give an increased respirable fraction of the active material

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