Verapamil DESCRIPTION NewsLinks Verapamil HCl is a calcium ion influx inhibitor (slow channel blocker or calcium ion antagonist). Verapamil is administered as a racemic mixture of the R and S enantiomers. Verapamil HCl is an almost white, crystalline powder, practically free of odor, with a bitter taste. It is soluble in water, chloroform, and methanol. Verapamil HCl is not chemically related to ...

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