the calcium antagonists , i.e. , nifedipine ( 0.3-3 micrograms/kg ) , diltiazem ( 10-100 micrograms/kg ) and kb-944 ( 10-100 micrograms/kg ) , administered during the sustained phase of the pressor responses to equieffective doses of methoxamine ( 100 micrograms/kg ) and xylazine ( 1000 micrograms/kg ) , lowered mean arterial pressure .
C0012373
diltiazem
C0020649
lowered