CARBOXYLVINYL POLYMER-CONTAINING NANOPARTICLE SUSPENSIONS
First Claim
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1. A topically administrable aqueous ophthalmic suspension composition comprising:
- a carboxyvinyl polymer at a concentration of 0.1 to 0.5 w/v %;
a galactomannan at a concentration of 0.1 to 0.4 w/v %;
borate at a concentration of 0.4 to 2.0 w/v %; and
a sparingly soluble particulate compound, said compound having a solubility in water at 25°
C. of 0.001 to 0.1 w/v % and a particle size of 50 to 700 nm.
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Abstract
The present invention generally relates to suspension compositions having a carboxyvinyl polymer such as a carbomer, a galactomannan such as guar, and a borate compound. A sparingly soluble particulate compound such as nepafenac is also included in the compositions. The sparingly soluble particulate compound has a small particle size to enhance bioavailability of the compound.
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23 Claims
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1. A topically administrable aqueous ophthalmic suspension composition comprising:
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a carboxyvinyl polymer at a concentration of 0.1 to 0.5 w/v %; a galactomannan at a concentration of 0.1 to 0.4 w/v %; borate at a concentration of 0.4 to 2.0 w/v %; and a sparingly soluble particulate compound, said compound having a solubility in water at 25°
C. of 0.001 to 0.1 w/v % and a particle size of 50 to 700 nm. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A topically administrable ophthalmic suspension composition consisting essentially of
a) 0.3 w/v % nepafenac having a particle size of 50 to 700 nm; -
b) 0.4 w/v % carbomer; c) 0.2 w/v % guar; d) 0.5 w/v % boric acid; e) 0.06 w/v % sodium carboxymethylcellulose; f) 0.4 w/v % sodium chloride; g) 0.5 w/v % propylene glycol; h) a pH-adjusting agent in an amount sufficient to cause the composition to have a pH of 7.0; i) 0.005% (w/v) benzalkonium chloride; j) 0.01% edetate disodium; and k) purified water.
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20. A method for maintaining the viscosity of a topical ophthalmic composition comprising 0.1 to 0.5 w/v % carbomer when said composition is topically applied to the eye, the method comprising:
adding galactomannan sufficient to provide a concentration of 0.1 w/v % to 0.4 w/v % galactomannan in said composition, and borate sufficient to provide a concentration of 0.4 w/v % to 0.6 w/v % in said composition. - View Dependent Claims (21, 22, 23)
Specification