Verapamil SR Tablets for High Blood Pressure

This sustained-release calcium channel blocker treats high blood pressure and angina. Verapamil SR® information below covers safe use, dose basics, and how to access treatment, including options without insurance. US shipping from Canada.

What Verapamil SR Is and How It Works

Verapamil SR is a sustained-release form of verapamil, a non-dihydropyridine calcium channel blocker. It relaxes vascular smooth muscle and slows conduction through the atrioventricular node. This reduces blood pressure and can help control certain arrhythmias. The effect develops over hours due to the controlled-release design.

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Some labels refer to the formulation as verapamil hcl sr. The medicine decreases myocardial oxygen demand by lowering afterload and heart rate. That can reduce angina episodes in appropriate patients.

The class may also lessen palpitations from specific supraventricular tachyarrhythmias by slowing AV nodal conduction. Always follow the approved label for your product.

Who It’s For

This treatment is indicated for hypertension in adults. It may also be used for chronic stable angina or vasospastic angina when appropriate. For certain arrhythmias, clinicians may use it to control ventricular rate in atrial fibrillation or other supraventricular tachycardias.

Some patients are stabilized on strengths such as verapamil sr 240, based on response and tolerability. People with severe left ventricular dysfunction, advanced AV block without a pacemaker, or severe hypotension generally should not use it.

Learn more about conditions it treats: see High Blood Pressure, Angina, Atrial Fibrillation, and Supraventricular Tachycardia. For medicine class context, browse the Cardiovascular category.

Dosage and Usage

Follow your prescription label for total daily amount and schedule. Swallow sustained-release tablets or capsules whole; do not crush, split, or chew. Take with food if labeled, as some products advise consistent administration with meals.

Labeled strengths include options like verapamil 180 mg sr and higher strengths for maintenance. Specific amounts depend on prior therapy, indication, and patient factors. Converting between extended-release formats (for example, ER-to-SR conversion) requires prescriber oversight because release characteristics differ.

Take the medicine at the same time each day. Use a pill organizer or reminder app to support adherence. If your product directs once-daily usage, avoid taking extra doses.

Strengths and Forms

Availability may vary by manufacturer and pharmacy. Common sustained-release presentations include:

• Tablets: typically 120 mg, 180 mg, 240 mg, and 360 mg
• Extended-release capsules: similar strengths depending on brand

Regional brand names can include Securon SR, Veracaps SR, or Vertab SR 240, depending on market. Your dispensed product will reflect the prescriber’s order and local availability.

Missed Dose and Timing

If you miss a dose, take it when remembered unless it is close to the next dose. Do not double up to make up a missed dose. If uncertain, skip the missed dose and resume your regular schedule.

Label examples sometimes reference verapamil sr 120 for once-daily regimens. The general principle is to maintain a steady daily rhythm. Consistency helps the controlled-release system perform as intended.

Storage and Travel Basics

Store at room temperature away from moisture and excessive heat. Keep in the original container with the label intact. Protect from light if the packaging advises it. Always keep out of reach of children and pets.

When traveling, carry your medication in your hand luggage. Bring a copy of your prescription and your pharmacy label for security screening. Use a simple checklist to avoid missed doses across time zones. Refill early before long trips to prevent gaps.

Benefits

This medicine reduces blood pressure by relaxing blood vessels and lowering cardiac workload. It can help reduce chest discomfort in stable angina and support rate control in certain supraventricular arrhythmias. The sustained-release format may enable once-daily dosing for convenience.

Many patients prefer once-daily options such as verapamil 240 mg sr for simplicity. Convenience can aid adherence, which supports steady blood pressure control. Discuss goals and expectations with your clinician.

Side Effects and Safety

• Common: constipation, dizziness, headache
• Less common: edema, nausea, fatigue
• Possible: low blood pressure, slow heart rate

Serious effects can include significant bradycardia, AV block, or worsening heart failure in susceptible patients. Seek urgent care for fainting, severe dizziness, or shortness of breath. Higher strengths, including verapamil sr 360 mg, may increase certain effects in sensitive individuals. Avoid alcohol misuse, which can enhance blood pressure lowering and dizziness.

If used with beta-blockers, monitor for additive effects on heart rate and conduction. Patients with liver impairment may need careful supervision due to altered metabolism.

Drug Interactions and Cautions

Notable interactions involve CYP3A4 inhibitors or inducers. Grapefruit and grapefruit juice can increase drug exposure and should be avoided. Certain antiarrhythmics, beta-blockers, and digoxin require caution and monitoring when combined.

Examples include additive effects with agents like Atenolol. Diuretics such as Spironolactone may be co-prescribed for resistant hypertension, but they act by different mechanisms. Always review your complete medication list with your clinician, including over-the-counter drugs and supplements.

Some labels reference verapamil 120 sr in interaction discussions. For patients on additional antianginals, alternatives in the same class or in the dihydropyridine class, such as Nifedipine, may be considered by prescribers. Do not start or stop interacting medications without guidance.

What to Expect Over Time

Blood pressure reduction is typically gradual with sustained-release formulations. You may notice improved readings with consistent daily use. Angina frequency may decrease if the medicine is appropriate for your condition.

If therapy changes are needed, your prescriber may adjust the regimen using labeled strengths. Any ER-to-SR conversions should follow product labeling and clinical judgment. Keep a log of blood pressure readings to support visits.

For patients with diabetes and cardiovascular risk, learn more in our article Diabetes and Hypertension. For lipid management topics, see Lipitor Uses.

Compare With Alternatives

Other calcium channel blockers include diltiazem extended-release options such as Diltiazem HCL CD. A dihydropyridine alternative for hypertension and angina is Norvasc. Choice depends on diagnosis, comorbidities, and response.

Pricing and Access

You can view current pricing and check availability before placing an order. Many customers see value through Canadian pricing with US delivery from Canada. If you are comparing offers, evaluate formulation, strength, and total quantity on the prescription.

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Availability and Substitutions

Supply can vary by strength and manufacturer. If a selected item is unavailable, your prescriber may recommend a therapeutically appropriate alternative in the same class or a different class. Pharmacy teams dispense the product that matches your prescription and regional supply.

Patient Suitability and Cost-Saving Tips

Patients with uncontrolled hypertension, stable angina, or eligible arrhythmias may be candidates. Those with severe hypotension, advanced AV block without pacing, or decompensated heart failure may not be suitable. Discuss risks if you have liver impairment or take multiple interacting medicines.

Consider multi-month fills to reduce per-fill fees and reduce refill frequency. Set up refill reminders on your phone or calendar. When switching formulations, such as ER-to-SR, seek guidance and avoid self-adjustment.

Questions to Ask Your Clinician

• Primary goal: blood pressure, angina, or rate control?
• Is my current strength the best option?
• Should I take it with food for my specific product?
• Any interactions with my other medicines or supplements?
• How will we monitor heart rate and blood pressure?
• What should I do if constipation becomes troublesome?

Authoritative Sources

For detailed, label-based information, review official references: see FDA DailyMed monographs for verapamil extended-release products on the DailyMed site for product labeling, the Health Canada Drug Product Database entry in the Health Canada DPD search portal, and manufacturer product information where available via published prescribing information.

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