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Health tools

Research and education tools. They do not replace clinical advice, diagnosis, or treatment.

Research & Education Tool

Blood Pressure Average Calculator

Average home blood pressure readings and show a simple screening range.

Average BP - entered readings only
Range - screening category

These calculations are for education only and do not replace clinical advice, diagnosis, or treatment. Always confirm medical decisions with a qualified healthcare professional.

Research & Education Tool

Mean Arterial Pressure Calculator

Calculate estimated mean arterial pressure from systolic and diastolic blood pressure.

MAP - DBP + one-third pulse pressure

These calculations are for education only and do not replace clinical advice, diagnosis, or treatment. Always confirm medical decisions with a qualified healthcare professional.

Research & Education Tool

Pulse Pressure Calculator

Calculate pulse pressure from systolic and diastolic blood pressure.

Pulse pressure - SBP - DBP

These calculations are for education only and do not replace clinical advice, diagnosis, or treatment. Always confirm medical decisions with a qualified healthcare professional.

Research & Education Tool

QTc Calculator

Calculate corrected QT interval from measured QT and heart rate.

QTc - milliseconds
RR interval - seconds

These calculations are for education only and do not replace clinical advice, diagnosis, or treatment. Always confirm medical decisions with a qualified healthcare professional.

Product details

About Verapamil SR

Verapamil SR is a sustained-release form of verapamil hydrochloride, an oral calcium channel blocker used in cardiovascular care. You can buy Verapamil SR online, view the current price, and choose the strength and quantity shown during ordering. Match the strength, release type, and directions to your clinician’s treatment plan before checkout.

Sustained-release verapamil tablets release medicine gradually over time. This matters because SR, ER, and capsule formulations may not deliver verapamil in the same way, even when the active ingredient looks similar. Use the exact product name, strength, and release wording from your medicine label when choosing between Verapamil SR tablets, Verapamil ER products, Calan SR, Verelan, or generic verapamil hydrochloride SR.

Verapamil SR Price and Strength Selection

Verapamil SR price depends on the strength, quantity, brand or generic status, and the tablet presentation shown during ordering. A Verapamil SR 120 mg tablet, a Verapamil SR 240 mg tablet, and other verapamil extended-release products may have different cash-pay amounts. The most useful comparison is the total amount for the same strength, release type, and tablet count.

For Verapamil SR cost without insurance, review the cash price for the exact medicine you plan to use. Do not compare only the active ingredient name because sustained-release tablets and extended-release capsules can use different release systems. If a brand name such as Calan SR appears separately from a generic version, confirm whether the intended product allows substitution.

Detail to match Why it affects the order
Strength The milligram strength should match the directions on the medicine label.
Release type SR, ER, and other modified-release forms may work differently.
Quantity Total tablet count affects the final amount more than package wording alone.
Brand or generic Calan SR, Verelan, and generic verapamil products may not be interchangeable.
Cash-pay amount The displayed Verapamil cash price should be read with strength and quantity.

Quick tip: Match strength and release type first, then compare the final displayed amount.

How to Order Verapamil SR Online

To order Verapamil SR online, choose the tablet strength and quantity that match your current medication directions. Keep the medicine name, release type, strength, and dosing instructions available while placing the order. We may review order details if a strength, release form, or product name needs clarification.

  1. Choose Verapamil SR rather than another verapamil formulation.
  2. Match the milligram strength, such as 120 mg or 240 mg when shown.
  3. Review the total tablet count before submitting payment information.
  4. Keep your current medicine label available for product matching.

Some customers consider Verapamil SR from Canada when reviewing cash-pay access and service logistics. US delivery from Canada may be part of the service context for orders handled through licensed pharmacy channels. Shipping wording should not change the medication choice; the product, release system, and strength remain the key checks.

Tablet Form, Release Type, and Brand Names

Verapamil SR tablets are sustained-release tablets. Sustained release means the tablet is designed to release verapamil over an extended period rather than all at once. Extended release is a broader term that may appear as ER on labels, but ER does not automatically mean the same tablet design as SR.

Verapamil hydrochloride SR may be referenced alongside Calan SR, Verelan, Verapamil ER tablets, and other verapamil extended-release products. These names can refer to different dosage forms or release technologies. Calan SR is commonly associated with sustained-release tablets, while Verelan is commonly associated with extended-release capsule products.

Because modified-release medicines depend on their delivery system, do not crush or chew sustained-release tablets. Ask a pharmacist before splitting any verapamil extended-release tablet because some tablets are not designed to be divided. A small change in release type can change how much medicine is available at different times of day.

Term Practical meaning
Verapamil SR Sustained-release verapamil, usually supplied as a tablet.
Verapamil ER Extended-release verapamil, a broader label term.
Verapamil hydrochloride The salt form used in many oral verapamil products.
Calan SR A brand name associated with sustained-release verapamil tablets.
Verelan A brand name associated with extended-release verapamil capsules.

Why it matters: Matching the release system helps avoid a product that releases verapamil differently.

What Verapamil SR Is Used For

Verapamil is a non-dihydropyridine calcium channel blocker. It relaxes blood vessels and can slow electrical conduction through the heart. Clinicians use verapamil products in cardiovascular care, including treatment plans for high blood pressure, some forms of chest pain, and selected rhythm conditions.

Use depends on the exact formulation and the person’s cardiovascular history. Sustained-release tablets are often chosen when a longer release pattern is appropriate. Immediate-release tablets, sustained-release tablets, and extended-release capsules can have different dosing schedules, so one formulation should not be swapped for another without clinical direction.

For condition-level browsing, the High Blood Pressure collection covers medicines used for hypertension, while the Angina collection relates to chest pain prevention therapies. People reviewing rhythm-related care may also find the Atrial Fibrillation and Supraventricular Tachycardia sections useful for understanding related treatment areas.

Verapamil SR vs ER and Other Cardiovascular Medicines

Verapamil SR vs ER is mainly a release-system question. SR generally means sustained release, while ER means extended release. Those terms are sometimes used closely in everyday language, but the tablet or capsule design determines how the medicine enters the body over time.

Verapamil also differs from many other blood pressure medicines because it affects both blood vessels and heart conduction. ACE inhibitors, ARBs, beta blockers, and diuretics may appear in the same treatment area, but they do not work the same way. The right comparison depends on the diagnosis, pulse, blood pressure, other heart conditions, and the full medication list.

The Cardiovascular Products category can help you browse related treatment classes. Use those categories for orientation, not for replacing a product already chosen for your care plan. For broader educational reading, the Cardiovascular Resources section covers heart and blood pressure topics that can support conversations with a healthcare professional.

Storage, Handling, and Travel Basics

Store Verapamil SR tablets according to the package instructions, generally away from excess heat, moisture, and direct light. Keep tablets in the original bottle or blister until use so the product name, strength, and directions remain visible. Bathrooms, hot cars, and loose pill containers can expose tablets to moisture or temperature swings.

Sustained-release tablets generally do not require refrigerated handling. If the package gives specific storage instructions, follow those directions. Do not use tablets that are badly chipped, crumbled, discolored, or exposed to moisture without asking a pharmacist.

When traveling, carry Verapamil SR in the labeled container. The label helps identify the medicine, strength, and release type if questions arise during the trip. Pack enough supply for the planned travel period, and avoid mixing different verapamil formulations in the same container.

Side Effects, Warnings, and Monitoring

Verapamil can lower blood pressure and slow the heart rate. Common side effects include constipation, dizziness, headache, nausea, tiredness, and ankle swelling. These effects can be more noticeable after starting therapy, changing strength, or taking other medicines that affect blood pressure or heart rhythm.

Serious symptoms need prompt medical attention. Seek help for fainting, severe dizziness, shortness of breath, very slow heartbeat, worsening swelling, chest pain that is new or severe, or signs of an allergic reaction. Verapamil may worsen certain conduction problems or heart failure in some people.

Label contraindications for Calan SR include severe left ventricular dysfunction, hypotension or cardiogenic shock, sick sinus syndrome without a functioning pacemaker, second- or third-degree AV block without a functioning pacemaker, and atrial flutter or atrial fibrillation with an accessory bypass tract. Tell a healthcare professional about heart failure, low blood pressure, liver disease, kidney disease, pregnancy, breastfeeding, or rhythm problems before using verapamil.

  • Common effects: constipation, dizziness, headache, nausea, fatigue, and ankle swelling.
  • Serious concerns: fainting, severe low blood pressure, slow heartbeat, worsening heart failure, or allergic reaction.
  • Monitoring points: blood pressure, pulse, symptoms, and sometimes electrocardiogram results.
  • Product handling: do not crush or chew sustained-release tablets.

Monitoring may include home blood pressure readings, pulse checks, symptom review, and periodic clinical follow-up. Keep an updated medication list because verapamil interacts with several heart, cholesterol, anti-infective, seizure, and herbal products.

Interactions to Review Before Use

Verapamil is affected by CYP3A4 and P-gp, two systems involved in drug metabolism and transport. Some medicines can increase verapamil exposure, while others can lower it. Verapamil can also raise levels or effects of certain medicines taken with it.

Important interaction groups include beta blockers, digoxin, antiarrhythmics, some statins, macrolide antibiotics, azole antifungals, carbamazepine, rifampin, and St. John’s wort. Grapefruit products may increase verapamil exposure in some people. Ask whether grapefruit juice should be avoided with your regimen.

Combining verapamil with other medicines that slow heart rate can increase the risk of dizziness, fainting, or conduction problems. Combining it with medicines that lower blood pressure can increase lightheadedness. A current medication list helps a clinician or pharmacist assess whether Verapamil SR is appropriate with the rest of your therapy.

Authoritative Sources

This content is for informational purposes only and is not a substitute for professional medical advice.

This content is for informational purposes only and is not a substitute for professional medical advice.

Customer reviews

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Verapamil SR is used in cardiovascular care. Depending on the formulation and the person’s medical history, verapamil products may be used for high blood pressure, certain types of angina, or selected heart rhythm conditions.

Not always. SR means sustained release, while ER means extended release. The terms can look similar, but different tablets or capsules may release verapamil differently, so the exact formulation should match the intended medicine.

Sustained-release verapamil tablets should not be crushed or chewed because that can affect how the medicine is released. Ask a pharmacist before splitting any extended-release tablet, since tablet designs differ.

Common side effects include constipation, dizziness, headache, nausea, tiredness, and ankle swelling. Serious symptoms such as fainting, very slow heartbeat, severe dizziness, shortness of breath, or worsening swelling need prompt medical attention.

Verapamil SR cost can vary by strength, quantity, brand or generic version, and tablet presentation. Compare the total amount for the same release type, strength, and tablet count rather than comparing active ingredient names alone.

Verapamil can interact with beta blockers, digoxin, antiarrhythmics, some statins, certain antibiotics or antifungals, carbamazepine, rifampin, St. John’s wort, and grapefruit products. A current medication list helps a healthcare professional assess interaction risk.

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Verapamil SR $80.99
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