Patent ID: 7202236

Claim:
A modified release pharmaceutical composition comprising a pharmaceutically acceptable salt of a compound of formula (I) as active ingredient wherein: R 1 is —CHF 2 or —CH 2 CH 2 F; R 2 is hydrogen, hydroxy, methoxy or ethoxy; and n is 0 or 2; and at least one gelling polymer selected from hydroxymethylcellulose (HMC), hydroxyethylcellulose (HEC), hydroxypropylcellulose (HPC), methylcellulose (MC), ethylcellulose (EC), carboxyethylcellulose (CEC), ethylhydroxyethylcellulose (EHEC), carboxymethylhydroxyethylcellulose (CMHEC), hydroxypropylmethylcellulose (HPMC), hydroxypropylethylcellulose (HPEC) and sodium carboxymethylcellulose (Na CMC).