dihydropyridine calcium channel blocker drug pathway nimodipine drug pathway 2015-09-17T10:48:59Z PW:0001895 The pharmacokinetics and pharmacodynamics pathway of nimodipine, a calcium channel blocker developed for the treatment of hypertension but now used to prevent vasospasm. Genetic variations can result in changes in drug availability and can cause differences in the response of the organism to the drug. pathway vpetri