By opening up the blood vessels to improve blood flow, Calan® (verapamil hydrochloride) helps treat high blood pressure, chest pain, and other conditions. This prescription product is sold in brand-name and generic versions and comes in the form of a tablet. It is usually taken three or four times a day, with or without food.
Most people tolerate this drug well, and when side effects do occur, they are usually minor and easy to treat. Commonly reported side effects of the medicine include dizziness, nausea, and headaches.
(To read the full eMedTV article on this medication, click Calan. Topics discussed in this overview include available strengths, how to take it, what to discuss with your healthcare provider, and more.)