Question: is isosorbide a calcium channel blocker?
Answer: Imdur (isosorbide mononitrate) Extended Release and Norvasc (amlodipine) are indicated for the prevention of angina pectoris. Norvasc is also prescribed for the treatment of high blood pressure. Imdur and Norvasc belong to different drug classes. Imdur is a vasodilator and Norvasc is a calcium channel blocker (CCB).