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VERAPAMIL (ver AP a mil) is a calcium-channel blocker. It affects the amount of calcium found in your heart and muscle cells. This relaxes your blood vessels, which can reduce the amount of work the heart has to do. This medicine is used to treat chest pain caused by angina, high blood pressure, and controls heart rate in certain conditions.
Take this medicine by mouth with a glass of water. Follow the directions on the prescription label. This medicine can be taken with or without food. Take your doses at regular intervals. Do not take your medicine more often than directed.
Talk to your pediatrician regarding the use of this medicine in children. Special care may be needed.
Side effects that you should report to your doctor or health care professional as soon as possible:
dizziness or light headedness
fast heartbeat, palpitations, irregular heartbeat, or chest pain
swelling of the legs or ankles
Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):
weakness or tiredness
Do not take this medicine with any of the following:
red yeast rice
This medicine may also interact with the following medications:
barbiturates such as phenobarbital
local anesthetics or general anesthetics
medicines for heart rhythm problems like amiodarone, digoxin, flecainide, procainamide, quinidine
medicines for high blood pressure or heart problems
medicines for seizures like carbamazepine and phenytoin
rifampin, rifabutin or rifapentine
theophylline or aminophylline
If you miss a dose, take it as soon as you can. If it is almost time for your next dose, take only that dose. Do not take double or extra doses.
Keep out of the reach of children.
Store at room temperature between 15 and 25 degrees C (59 and 77 degrees F). Protect from light. Keep container tightly closed. Throw away any unused medicine after the expiration date.
They need to know if you have any of these conditions:
heart or blood vessel disease
heart rhythm disturbances such as sick sinus syndrome, ventricular arrhythmias, Wolff-Parkinson-White syndrome, or Lown-Ganong-Levine syndrome
liver or kidney disease
low blood pressure
an unusual or allergic reaction to verapamil, other medicines, foods, dyes, or preservatives
pregnant or trying to get pregnant
Check your blood pressure and pulse rate regularly. Ask your doctor or health care professional what your blood pressure and pulse rate should be and when you should contact him or her. Do not suddenly stop taking this medicine. Ask your doctor or health care professional how to gradually reduce the dose.
You may get drowsy or dizzy. Do not drive, use machinery, or do anything that needs mental alertness until you know how this medicine affects you. Do not stand or sit up quickly, especially if you are an older patient. This reduces the risk of dizzy or fainting spells. Alcohol may interfere with the effect of this medicine. Avoid alcoholic drinks.
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