The invention provides microparticles for use in a pharmaceutical composition for pulmonary administration, each microparticle comprising a particle of an active substance having, on its surface, particles of a hydrophobic material suitable for delaying the dissolution of the active substance. The invention also provides a method for making the microparticles.
Staniforth; John Nicholas (Bath, GB), Harris; Haggis (Bristol, GB), Morton; David Alexander Vodden (Bath, GB), Bannister; Robin (Essex, GB)
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