 Anipamil is an analog of the more common drug verapamil, which is the most common type of phenylalkylamine style calcium channel blocker.Anipamil has been shown to be a more effective antiarrhythmic medication than verapamil because it does not cause hypertension as seen in verapamil.It is able to do this by bonding to the myocardium tighter then verapamil.