It would be perfect on the off chance that you advise your specialist before taking any medication. Calan Generic 80mg 20 Tabs - verapamil Generic Name: verapamil (oral) (ver AH father industrial facility) Brand Names: Calan, Calan SR, Covera-HS, Isoptin, Isoptin SR, Verelan, Verelan PM What is verapamil? Verapamil is in a class of solutions called calcium channel blockers. Verapamil loosens up (enlarges) (veins and conductors), which makes it less requesting for the heart to pump and declines its workload. Verapamil is used to treat (hypertension), to treat angina (midsection torment), and to control a couple of sorts of convulsive heartbeats. Verapamil may similarly be used for purposes other than those recorded in this arrangement guide.