Patent ID: 7235248

Claim:
An oral pharmaceutical composition comprising about 5 to about 25% by weight of a cyclosporin, about 0.5 to about 90% by weight of a propylene glycol hydrophilic component, about 0.5 to about 90% by weight of a lipophilic component and about 0.5 to about 90% by weight of a hydrophilic surfactant, all weight percents being based on the total weight of the composition, the relative proportion of said cyclosporin, hydrophilic component, lipophilic component and hydrophilic surfactant being such that upon dilution of said composition with adequate water, an oil-in-water microemulsion having an average particle size of less than about 0.15 microns is spontaneously formed, provided that the cyclosporin is not cyclosporin A.