Calan
Overview
- About Calan
Generic name: Verapamil hydrochloride
Why is Calan prescribed?
Return to topVerapamil-based medications can be prescribed for several heart and blood pressure problems. The fast-acting brands (Calan and Isoptin) are taken for angina (chest pain due to clogged cardiac arteries), as well as irregular heartbeat and high blood pressure. The longer-acting brands (Calan SR, Isoptin SR, Verelan, and Verelan PM) are typically used only for high blood pressure. Covera-HS is prescribed for both high blood pressure and angina.
Verapamil is a type of medication called a calcium channel blocker. It eases the heart's workload by slowing down the passage of nerve impulses through it, and hence the contractions of the heart muscle. This improves blood flow through the heart and throughout the body, reduces blood pressure, corrects irregular heartbeat, and helps prevent angina pain.
Some doctors also prescribe verapamil to prevent migraine headache and asthma and to treat manic depression and panic attacks.
Most important fact about Calan
Return to topIf you have high blood pressure, you must take verapamil regularly for it to be effective. Since blood pressure declines gradually, it may be several weeks before you get the full benefit of verapamil; and you must continue taking it even if you are feeling well. Verapamil does not cure high blood pressure; it merely keeps it under control.
How should you take Calan?
Return to topCalan, Isoptin, and Verelan can be taken with or without food. Calan SR and Isoptin SR should be taken with food.
Covera-HS, Calan SR, Isoptin SR, Verelan and Verelan PM must be swallowed whole and should not be crushed, broken, or chewed.
You may open Verelan capsules and sprinkle the pellets on a spoonful of cool applesauce. Swallow all of the mixture immediately, and then drink a glass of cool water.
Take this medication exactly as prescribed, even if you are feeling well. Try not to miss any doses. If the drug is not taken regularly, your condition can get worse.






