the pharmacokinetic and pharmacodynamic properties of a new multiple-unit , controlled-release ( cr ) formulation of metoprolol ( metoprolol succinate , 95 mg once daily ) , which has almost constant ( zero-order ) release properties over most of a 24-h dose interval , have been compared with those of conventional metoprolol tablets ( metoprolol tartrate , 100 mg once daily and 50 mg twice daily ) , in 12 healthy male volunteers .
C0025859
metoprolol
C0700548
metoprolol tartrate