Patent ID: 8686036

Claim:
A method for controlling heart rate in a subject, the method comprising: administering to the subject a therapeutically effective amount of a pharmaceutical composition comprising (S)-methyl-3-[4-(2-hydroxy-3-isopropylamino)propoxy]phenylpropionate or pharmaceutically acceptable salt thereof, wherein the pharmaceutical composition is substantially free of (R)-methyl-3-[4-(2-hydroxy-3-isopropylamino)propoxy]phenylpropionate or a pharmaceutically acceptable salt thereof, and the subject is in need of heart rate control with control of associated hypotension, wherein a therapeutically equivalent concentration of a pharmaceutical composition comprising (R,S)-methyl-3-[4-(2-hydroxy-3-isopropylamino)propoxy]phenylpropionate hydrochloride is likely to cause the subject to develop hypotension.