Calan is used for treating supraventricular tachycardia, a rhythm disturbance of the heart. It is also used for controlling heart rate response to other rhythm disturbances, specifically atrial fibrillation and atrial flutter. Calan is a calcium channel blocker. It works by slowing the electrical conduction in the heart, slowing heart rate, and/or normalizing heart rhythm.
Use Calan as directed by your doctor.
- Do not take in larger or smaller amounts or for longer than recommended. Follow the directions on your prescription label.
- Your doctor may occasionally change your dose to make sure you get the best results.
- Do not crush, chew, break, or open Calan. Swallow it whole. Breaking or opening the pill may cause too much of the drug to be released at one time.
- Do not stop taking this medication without first talking to your doctor. If you stop taking Calan suddenly, your condition may become worse.
- If you miss a dose of Calan, take it as soon as possible. If it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not take 2 doses at once.
Ask your health care provider any questions you may have about how to use Calan.
Store Calan at room temperature, between 68 and 77 degrees F (20 and 25 degrees C). Store away from heat, moisture, and light. Do not store in the bathroom. Keep Calan out of the reach of children and away from pets.
Active Ingredient: Verapamil hydrochloride.