Verapamil Precautions and Warnings

Verapamil Precautions and Warnings Overview

Verapamil can have a drug interaction with other medicines or not be a good drug for you if you have certain medical conditions,. It’s important to know all of the medicines that you or your family member takes. Use the migraine journalto keep a list of all medicines to share with your doctor. Only your doctor can prescribe prescription medicines for you. Do not stop taking any medicine without speaking to your doctor.


You should not take Verapamil and Verapamil SR if you have:

  • Severe heart abnormalities (such as left ventricular dysfunction)
  • Low blood pressure or poor heart function (cardiogenic shock)
  • Certain heart rhythm problems (sick sinus syndrome except in patients who have a pacemaker)
  • Second- or third-degree AV block (condition where heart impulses are delayed except in patients who have a pacemaker)
  • Rapid heart rate (atrial flutter or atrial fibrillation and an accessory bypass tract as in Wolff-Parkinson-White, Lown-Ganong-Levine syndromes)
  • Had an allergic reaction to Verapamil

You should talk to your doctor about whether you should take Verapamil if you have any condition associated with:

  • Liver or kidney damage
  • Decreased neuromuscular function


Verapamil in Children:

  • Safety and effectiveness in pediatric patients have not been established.


Verapamil Use in Older Adults:

  • In general, older adults should be started on a low dose of Verapamil and watched because older adults are more likely to have lower liver, kidney, or heart function and take additional medications that may interact with Verapamil.
  • The half-life (the time it takes for the drug to lose half of its activity) of Verapamil may be longer in older adults.


Verapamil Use in People with Liver Damage:

  • People with liver damage should take one-third of the oral daily dose that people with normal liver function can take


Verapamil and Alcohol:

Verapamil may increase blood alcohol levels and prolong its effects.

Remember: Mixing alcohol and medicines puts you at risk for dangerous reactions. Protect yourself by avoiding alcohol if you are taking a medication and don’t know its effect. To learn more about a medicine and whether it will interact with alcohol, talk to your pharmacist or doctor.

Written & reviewed by: Lisa Erwin R.Ph. CGP | Last review date: Dec 2010. Click the References Link below for a complete list of references.

Written & reviewed by: Lisa Erwin R.Ph. CGP | Last review date: Dec 2010.
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