A controlled release pharmaceutical composition for oral use comprising carvedilol. The composition releases carvedilol after oral administration to a mammal, including a human, in such a manner that a prolonged residence of carvedilol is obtained in the circulatory system compared with the known compositions of carvedilol. Furthermore, a composition according to the present invention makes available to the body a suitable plasma concentration of one or both of the enantiomeric species, namely R(+) and/or S(−) carvedilol for obtaining the desired therapeutic effect.
