Patent ID: 7943176

Claim:
A pharmaceutical composition for oral administration having prolonged release of an active agent, said active agent consisting of propiverine and/or one or more pharmaceutically acceptable salts thereof, the composition being adapted for once-a-day administration and having the following in vitro release, measured in 750 ml of 0.1 N hydrochloric acid during the first hour and subsequently measured in 750 ml USP buffer at pH=5.8 using a Ph. Eur. Basket method at 100 rpm and 37° C.: 0-20% proviverine, released after 1 hour, 10-45% proviverine, released after 3 hours, 30-75% proviverine, released after 5 hours, 40-85% proviverine, relased after 7 hours, 50-95% provivierine, relased after 9 hours, >60% proviverine, relased after 12 hours.