Drugs A - Z
Verapamil Hydrochloride Solution for injection
Generic Name: verapamil | Brand Name: Isoptin
Brand Names: Isoptin, Verelan, Isoptin SR, Calan SR, Calan, Verapamil Hydrochloride SR, Verelan PM, Verapamil Hydrochloride, Covera-HS
What is this medicine?
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 an irregular heart beat or flutter.This medicine may be used for other purposes; ask your health care provider or pharmacist if you have questions.
What should I tell my health care provider before I take this medicine?
They need to know if you have any of these conditions:- heart or blood vessel disease
- heart rhythm disturbances like sick sinus syndrome, ventricular arrhythmias, Wolff-Parkinson-White syndrome, or Lown-Ganong-Levine syndrome
- kidney disease
- liver disease
- neuromuscular disease such as muscular dystrophy
- slow or irregular heartbeat
- an unusual or allergic reaction to verapamil, other medicines, foods, dyes, or preservatives
- pregnant or trying to get pregnant
- breast-feeding
How should I use this medicine?
This medicine is for injection into a vein. It is given by a health care professional in a hospital or clinic setting.Talk to your pediatrician regarding the use of this medicine in children. Special care may be needed.
Overdosage: If you think you have taken too much of this medicine contact a poison control center or emergency room at once.
NOTE: This medicine is only for you. Do not share this medicine with others.
What if I miss a dose?
This does not apply.What may interact with this medicine?
Do not take this medicine with any of the following:- cisapride
- disopyramide
- dofetilide
- grapefruit juice
- hawthorn
- pimozide
- red yeast rice
This medicine may also interact with the following medications:
- barbiturates, like phenobarbital
- cimetidine
- cyclosporine
- lithium
- local anesthetics or general anesthetics
- medicines for heart rhythm problems like amiodarone, digoxin, flecainide, procainamide, quinidine
- medicines for blood pressure or heart problems
- medicines for seizures like carbamazepine and phenytoin
- rifampin, rifabutin or rifapentine
- theophylline or aminophylline
This list may not describe all possible interactions. Give your health care provider a list of all the medicines, herbs, non-prescription drugs, or dietary supplements you use. Also tell them if you smoke, drink alcohol, or use illegal drugs. Some items may interact with your medicine.
What should I watch for while using this medicine?
Your condition will be monitored carefully while you are receiving this medicine.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.
What side effects may I notice from receiving this medicine?
Side effects that you should report to your doctor or health care professional as soon as possible:- allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue
- breathing problems
- fast, irregular heartbeat
- feeling faint or lightheaded, falls
- 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):
- constipation
- facial flushing
- headache
- nausea, vomiting
- sexual dysfunction
- weak or tired
This list may not describe all possible side effects. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

