Canadian Medical Guide > Chemicals and Drugs > Cardiovascular Agents > Calcium Channel Blockers Terms and Definitions

Calcium Channel Blockers

Medical Definition:	A class of drugs that act by selective inhibition of calcium influx through cell membranes or on the release and binding of calcium in intracellular pools. Since they are inducers of vascular and other smooth muscle relaxation, they are used in the drug therapy of hypertension and cerebrovascular spasms, as myocardial protective agents, and in the relaxation of uterine spasms.
Guide Notes:	vasodilators; D25-26 qualif; DF: CA CHANNEL BLOCK
Previously Indexed:	Calcium (1966-1967) /antagonists & inhibitors (1968-1981),Ion Channels (1979-1981)

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