Patent ID: 8313754
Filing Date: 2012-11-20
Classification: A61K,A61P

Abstract:
1. An aqueous composition suitable for topical ophthalmic administration comprising: an ophthalmically acceptable drug; a viscosity enhancing amount of a combination of two polymers having a synergistic effect on the composition's viscosity, the combination of two polymers being hydroxypropyl methylcellulose (HPMC) and hydroxyethylcellulose (HEC), wherein the concentration of HPMC is in a range from 0.05 to 0.5% and HEC is in a range from 0.05 to 0.5%; wherein the aqueous composition has a viscosity that is greater than 150% of a sum of viscosities of two solutions, each of the two solutions respectively including only one of the two polymers.