pharmacotherapy calcium channel blocking agent therapy NCIT:C333 calcium channel antagonist therapy One of a class of drugs that acts by selective inhibition of calcium influx through cell membranes or on the release and binding of calcium in intracellular pools. treatment with calcium channel blocker drug treatment with calcium channel blocker treatment with calcium channel blocking drug treatment with calcium channel blocking medication Treatment with a pharmaceutical agent that inhibits the movement of calcium across through calcium channels in the cell membrane, preventing or decreasing the amount of calcium able to enter the cell. These drugs are used for their chronotropic, antihypertensive and vasodilatory effects. treatment with calcium channel blocker medication calcium channel blocker drug therapy calcium channel antagonist drug therapy CHEBI:38215