the binding site in both brain and heart was highly specific for dihydropyridine calcium antagonists , such as nifedipine , nimodipine , and nisoldipine , since these drugs were several orders of magnitude more potent as inhibitors of [ 3h ] ndp binding than verapamil , methoxyverapamil , or diltiazem .
C0042523
verapamil
C0016986
methoxyverapamil