Patent ID: 7163672

Claim:
An inhalable pharmaceutical aerosol formulation comprising a hydrofluoroalkane propellant, a medicament and a surfactant that is an alkyl-polyglycoside of formula I: or a derivative thereof; wherein DP is the average degree of polymerisation and R is an alkyl chain or a mixture of alkyl chains having a chain length of from 6 to 22 carbon atoms; wherein: R is 2-ethyl-1-hexyl and DP is 1.6; or R is a mixture of C 8 and C 10 alkyl chains in a ratio of 60 C 8 :40 C 10 and DP is 1.5; or R is a mixture of C 16 and C 18 alkyl chains and DP is 1.2–1.3; or R is a mixture of C 20 and C 22 alkyl chains and DP is 1.2–1.3; or R is C 10 and DP is 2.7; or R is a mixture of C 10 and C 12 alkyl chains and DP is 1.4; or R is a mixture of C 12 and C 14 alkyl chains and DP is 1.4; or the alkylpolyglycoside is n-dodecyl β-D-maltoside (C 12 G 2 ).