Patent ID: 7410965

Claim:
A delayed release pharmaceutical formulation containing: 1-dimethylamino-3-(3-methoxyphenyl)-2-methylpentan-3-ol or a pharmaceutically acceptable salt thereof in a release-delaying matrix, said matrix comprising from 1 to 80 wt. % of at least one pharmaceutically acceptable, matrix-forming, polymer, and said formulation exhibiting the following in vitro release rates relative to 100% of the 1-dimethylamino-3-(3-methoxyphenyl)-2-methylpentan-3-ol initially contained therein measured using the Ph. Eur. paddle method at 75 rpm in a buffer at a pH value of 6.8 at 37° C. and with UV spectrometric detection: 3-35 wt. % released after 0.5 hour, 5-50 wt. % released after 1 hour, 10-75 wt. % released after 2 hours, 15-82 wt. % released after 3 hours, 30-97 wt. % released after 6 hours, more than 50 wt. % released after 12 hours, more than 70 wt. % released after 18 hours, and more than 80 wt. % released after 24 hours.