No, lisinopril is not a calcium channel blocker. It is classified as an ACE (Angiotensin-Converting Enzyme) inhibitor, which is primarily used to treat high blood pressure and heart failure.
Calcium channel blockers, on the other hand, work by preventing calcium from entering the cells of the heart and blood vessel walls, which helps to relax and widen the blood vessels. This mechanism is different from that of ACE inhibitors like lisinopril, which help relax blood vessels by blocking the formation of a hormone that causes blood vessels to constrict.
In summary, lisinopril and calcium channel blockers are both used to manage hypertension but do so through different pathways in the body.