of the twelve 1,4-dihydropyridines evaluated ( +/- ) -nitrendipine was the most potent with a ki-value of 280 pmol/l , nifedipine had a ki-value of 500 pmol/l and the weakest drug tested , ( +/- ) -bay b 4328 , had a ki-value of 14.3 nmol/l .
C0012315
dihydropyridines
C0028066
nifedipine