the dihydropyridine ( dhp ) ca2+ channel blocking drugs nicardipine , nitrendipine , nimodipine , felodipine , nifedipine and nisoldipine were examined for activity in inhibiting specific ( - ) - [ 3h ] qnb and [ 3h ] wb4101 binding to the muscarinic and alpha-adrenergic receptors , respectively , of rat brain .
C0012315
dihydropyridine
C0028127
nitrendipine