Calan is commonly prescribed to treat several cardiovascular conditions, such as chest pain, high blood pressure, and certain irregular heart rhythms. The medication comes in tablet form and is typically taken three or four times a day. Calan causes the blood vessels to relax, which improves blood flow and makes it easier for the heart to pump blood. Possible side effects include dizziness, nausea, and headaches.
What Is Calan?Calan® (verapamil hydrochloride) is a prescription medication used to treat various conditions of the heart and blood vessels.
Who Makes It?Calan is made by Pfizer, Inc. Generic versions are made by various manufacturers.
What Is Calan Used For?Calan has been licensed for several uses. These uses include:
- Certain irregular heart rhythms (arrhythmias), including:
- Chronic atrial flutter
- Atrial fibrillation
- Paroxysmal supraventricular tachycardia (PSVT).
How Does Calan Work?Calan is part of a class of drugs called calcium channel blockers. It helps to slow down the rate at which calcium moves into your heart and blood vessels. This, in turn, helps to relax the vessels, which allows better blood flow and makes it easier for the heart to pump blood.
There are two basic types of calcium channel blockers: dihydropyridine and non-dihydropyridine. The most important difference between the two types is that non-dihydropyridine calcium channel blockers can slow down the heart rate, while dihydropyridine calcium channel blockers do not. Calan is a non-dihydropyridine calcium channel blocker, which means that it can decrease the heart rate. Because of this, the medication is useful for certain types of irregular heart rhythms (arrhythmias).