View CALAN savings options available to you including Manufacturer Coupons, Rx Advantage Savings Card, Canadian Prescription Savings or CALAN Patient Assistance Program.

Programs are suitable for individuals who want to buy CALAN without insurance, with insurance or for those who are underinsured. You can pay as little as $0 per fill.*

Manufactured by Pfizer

*Applicable to Drug Coupons & Patient Assistance Programs

This content is intended for US audiences only

Drug savings programs

  • Qualified

    Rx Advantage Card

    A hand holding a dark-colored prescription savings card with various ID numbers and the label "Rx Advantage." Text below states the card is not insurance and cannot be used for Medicare or Medicaid.

    Save up to 90%

  • Available

    Canadian Prescription Savings

    Manufactured by
    Powered by
    Prescription Help Logo
  • Unavailable

    Drug Coupons

    A hand holds a Copay Savings Card that states eligible patients with commercial insurance may pay as little as $0 per tube for Opzelura.
  • Unavailable

    Patient Assistance Programs

    A picture of a patient assistance application form
Jamie Winn NowPatientGreen tick
Updated on 26 Apr 2024

Learn more about CALAN

What is CALAN?

What is CALAN?

CALAN is the brand name for verapamil and is available as an oral tablet.

What dosages is CALAN available in?

What dosages is CALAN available in?

CALAN is available as a 40 mg, 80 mg, and 120 mg oral tablet.

What is CALAN used for?

What is CALAN used for?

CALAN is a calcium channel blocker (CCB) used for chest pain (angina), the prevention and treatment of certain types of arrhythmias, and high blood pressure.

How does CALAN work?

How does CALAN work?

CALAN is a non-dihydropyridine calcium channel blocker. It lowers blood pressure and helps with irregular heart rhythm (arrhythmia) by slowing your heart rate and relaxing your blood vessels. This also helps your heart to get more oxygen so it doesn’t need to work as hard to pump, which can help with chest pain.

How do I take CALAN?

How do I take CALAN?

CALAN is typically taken by mouth 3 to 4 times a day. Your physician may adjust your dose based on things like how well you’re responding to the medication, your age, your height, if you have liver problems, and if you’re having side effects.

Is it safe for me to take CALAN?

Is it safe for me to take CALAN?

CALAN is a safe and effective treatment when used for FDA licensed indications. However, like all medications, they may give you unwanted side effects. You should always discuss potential side effects with your physician to ensure the medication is suitable and right for you. You should not take this medication if you have severe left ventricular dysfunction, hypotension (systolic pressure less than 90 mm Hg) or cardiogenic shock, sick sinus syndrome (except in patients with a functioning artificial ventricular pacemaker), second- or third-degree AV block (except in patients with a functioning artificial ventricular pacemaker), or atrial flutter or atrial fibrillation and an accessory bypass tract (eg, Wolff-Parkinson-White, Lown-Ganong-Levine syndromes).

CALAN Common Side Effects

CALAN Common Side Effects

Common side effects of CALAN include:

  • Constipation
  • Dizziness
  • Nausea
  • Low blood pressure
  • Headache
  • Swelling in the hands and feet
  • Tiredness
  • Rash
  • Flushing
CALAN Serious Side Effects

CALAN Serious Side Effects

Serious side effects are rare with CALAN. Contact your healthcare provider immediately if you experience any of the following.

  • Heart failure: chest pain, difficulty breathing, dizziness, tiredness, swollen legs and feet, bloating
  • Dangerously low blood pressure: dizziness, lightheadedness, pale skin, feeling faint
  • Liver problems: severe nausea, vomiting, right-sided stomach pain, fatigue, low or no appetite, yellowing of the skin or eyes
Effects of other drugs, drug classes and over-the-counter products on CALAN

Effects of other drugs, drug classes and over-the-counter products on CALAN

The following medications may interact with CALAN:

  • Cytochrome inducers/inhibitors – Clinically significant interactions have been reported with inhibitors of CYP3A4 (e.g., erythromycin, ritonavir) causing elevation of plasma levels of CALAN while inducers of CYP3A4 (e.g., rifampin) have caused a lowering of plasma levels of CALAN
  • HMG-CoA reductase inhibitors: The use of HMG-CoA reductase inhibitors that are CYP3A4 substrates in combination with CALAN has been associated with reports of myopathy/rhabdomyolysis
  • Ivabradine – Concurrent use of CALAN increases exposure to ivabradine and may exacerbate bradycardia and conduction disturbances. Avoid co-administration of CALAN and ivabradine
  • Aspirin – In a few reported cases, co-administration of CALAN with aspirin has led to increased bleeding times greater than observed with aspirin alone
  • Grapefruit juice – Grapefruit juice may increase plasma levels of CALAN.
  • Alcohol – CALAN may increase blood alcohol concentrations and prolong its effects
  • Lithium – Increased sensitivity to the effects of lithium (neurotoxicity) has been reported during concomitant CALAN-lithium therapy; lithium levels have been observed sometimes to increase, sometimes to decrease, and sometimes to be unchanged. Patients receiving both drugs must be monitored carefully
Who makes CALAN?

Who makes CALAN?


Is CALAN safe in pregnancy?

Is CALAN safe in pregnancy?

It is not known if CALAN will harm your unborn baby. If you become pregnant while receiving CALAN, talk to your healthcare provider.


What to do if you missed your CALAN dose

The FDA's medical product safety reporting program for health professionals, patients and consumers.

Learn more about reporting side effects
dollar sign

Drug Savings Tips

Medical Disclaimer

NowPatient has taken all reasonable steps to ensure that all material is factually accurate, complete, and current. However, the knowledge and experience of a qualified healthcare professional should always be sought after instead of using the information on this page. Before taking any drug, you should always speak to your doctor or another qualified healthcare provider.

The information provided here about medications is subject to change and is not meant to include all uses, precautions, warnings, directions, drug interactions, allergic reactions, or negative effects. The absence of warnings or other information for a particular medication does not imply that the medication or medication combination is appropriate for all patients or for all possible purposes.

FAQ logo

People Asked

Now Patient Data Security

Data Security

Our Commitment to You.

Find out moreNow Patient Data SecurityNow Patient Data Security

What is NowPatient

Telehealth and Online Pharmacy

NowPatient is a licensed online pharmacy and doctor service that is available around the world. Our service is FREE and packed with valuable features that can benefit your health such as medication reminders, educational blogs, medically approved symptoms checker, UK NHS online pharmacyprivate treatment plansRx Advantage cardhealth conditions information, affordable medications options, genetic testinghome test kitshealth riskspollen meterair quality monitor, weight loss plans, drug savings programs and lots more!

A laptop screen displaying a health dashboard with widgets showing health profile, notifications, personalized health tools, and favorite widgets including body mass index and weight loss tracking.


To improve the lives of everyone by making high-quality care accessible and convenient

We are here to improve lives. Our service gives you access to smart features and resources that can help empower you to take control of your health and improve your health outcomes. All this, in one place, for FREE. We strive to bring a fresh perspective to managing health. NowPatient can be accessed by downloading the App or using your web browser.

Download our app today

A collage showing a map with pharmacies, a questionnaire, medication details, and a person video chatting on a screen.

Can I trust NowPatient

Meet our medical team

We are a passionate group of clinicians and medical writers covering a broad range of specialities with experience operating in health systems in the United Kingdom & United States. Providing excellent care and advice is at the heart of everything we do. You can read more about our medical team by visiting the medical team page or learn more about how we curate content by visiting our editorial process

Your Questions Answered

For your peace of mind, we can answer your questions quickly

We have a comprehensive list of FAQ’s on each feature page. Alternatively, for broader questions around our service just click the button below.
Find your answers