the dihydropyridines , nicardipine , nifedipine , nimodipine , nisoldipine , nitrendipine , pn 200-110 ( isradipine ) and py 108-068 , are generally far more potent in producing coronary vasodilatation than in producing negative inotropic , chronotropic and dromotropic ( first-degree atrioventricular block ) effects , although there are minor differences among them .
C0012315
dihydropyridines
C0028094
nimodipine