Oxybutynin formulations and method of use
First Claim
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1. A pharmaceutical composition comprising an aqueous oxybutynin chloride solution, wherein said composition has an oxybutynin concentration of about 1.0 to 30 mg/ml and a pH of 3 to 5 is stable at about 37 degrees C for at least 12 hours, when placed within the bladder.
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Abstract
Oxybutynin chloride formulations having increased stability at body temperature, even at high concentrations. These formulations comprise oxybutynin chloride at a pH of between 3.0 and 5.0, and may include a buffer capable of providing adequate buffering capacity in this range. The OC solutions can be placed in an infuser device for treatment of bladder dysfunction.
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16 Claims
- 1. A pharmaceutical composition comprising an aqueous oxybutynin chloride solution, wherein said composition has an oxybutynin concentration of about 1.0 to 30 mg/ml and a pH of 3 to 5 is stable at about 37 degrees C for at least 12 hours, when placed within the bladder.
Specification