Expect 1 to 2 Week Shipping Delays. Due to high call volumes, please click here if you need to contact us.

1. Strength


2. Quantity

Prescription Required
IMPORTANT NOTE: A valid Prescription is required to be mailed or faxed to complete this order. I acknowledge that I will need to be contacted to complete a health profile before my order is shipped.
Difference between Brand & Generic?

What is Isoptin SR?

Isoptin SR is a prescription medication that is used to treat high blood pressure and to lower your heart rate. Isoptin SR contains the calcium channel blocker medication verapamil. Verapamil works by relaxing the blood vessels in order to allow blood to flow more easily around the body.

Make sure to always read the patient information and instructions before using this medication. Always follow your doctor’s directions.

  • Isoptin SR should be taken with food.
  • If your doctor has directed you to take this medication once a day, then take it in the morning.
  • Swallow verapamil tablets whole without chewing or crushing.
  • It can take up to a week to feel the full benefit of Isoptin SR>


Tell your doctor and pharmacist:

  • About your drug and other allergies.
  • If you take any other prescription or over-the-counter medications.
  • Your medical history particularly of heart failure, abnormal heartbeat, slow heartbeat, low blood pressure, Lown-Ganong-Levine syndrome, sick sinus syndrome, Wolff-Parkinson-White syndrome
  • If you are pregnant or planning pregnancy.
  • If you drink alcohol.

You should also know:

  • Isoptin SR can interact with several medications causing serious side effects. Keep a track of all other prescription and over-the-counter medications that you take and share these with your doctor and pharmacist. Tell your doctor before taking any new medications.
  • You should not breast-feed while taking this medication.
  • All of your doctors should be aware that you take this medication.
  • Older adults may be more sensitive to the side effects of Isoptin SR.

Side Effects of Verapamil

Common side effects of Isoptin SR include but are not limited to:

  • Headaches.
  • Dizziness.
  • Constipation.

Get medical help if you have any of the following side effects of verapamil.

  • New or worsening abnormal heartbeat.
  • Slow heartbeat.
  • Severe dizziness or passing out.
  • Shortness of breath.
  • Rapid weight gain.
  • Swelling in your arms or legs.
  • Signs of a liver problem including tiredness, lack of hunger, stomach pain, upset stomach, dark urine, light colored stools, jaundice or vomiting.
  • Symptoms of an allergic reaction such as difficulty breathing, hives or swelling in your face, lips or throat.


What should I do if I miss a dose of verapamil?

If you miss a dose of Isoptin SR, you should take it as soon as you remember. However, if it is almost time for your next dose, then skip your missed dose.

What is the strength of Isoptin SR?

Both Isoptin SR and the generic alternative verapamil SR are available in a strength of 180mg. Only brand name Isoptin SR is available in a strength of 240mg.

A valid Prescription is required to be mailed or faxed to complete this order. I acknowledge that I will need to be contacted to complete a health profile before my order is shipped.

Your Lowest Price, Guaranteed

Our goal is to bring you the most affordable medication. If you find a lower price advertised by another website or your local pharmacy, we’ll match that price or beat it by 10% of the difference.* Call us at 1-877-385-5040 and a member of our CareTeam will be happy to assist you.

Call 1-877-385-5040
* Some exceptions may apply
Some exceptions may apply. To qualify for price matching, competitors must meet our standards for patient safety. Advertised prices must be for medication of the same type, strength, quantity, and form.

Real Customers, Honest Reviews

I have had good experiences with RX Connected. Rich
Richard February 28, 2020

Real Customers, Honest Reviews

I placed my first order last November. The process is exactly as I was told. I emailed my information, and sent original copies to them. Every time I have refilled my medication the representative has been friendly,and knowledgeable. I called today inquiring about the current status of a refill. After a short time, the representative gave me the information I needed (so I wouldn't worry). I appreciate the savings, and the professionalism shown by all the employees I've had contact with via phone. Keep up the good work.
Alex February 27, 2020

Real Customers, Honest Reviews

Like most other people, my prescription was very expensive and not covered. I started looking and found this pharmacy. While it takes approximately a month to receive your script, it's worth it for the savings.
Margaret February 26, 2020

Real Customers, Honest Reviews

In the past, I had heard people talk about getting some of their prescriptions from Canada due to the high prices in the US. I never really considered it until after a local doctor suggested RX Connected for one of my recommended medications. The price for the medication here was very expensive and not covered by by Medicare drug supplement plan. I'm very grateful that he told me about RX Connected. I have since told several other people about RX Connected. After your doctor writes the initial prescription, you just send it in, and the process begins. They are careful, professional, and send me my medication by mail, on time, like clock-work. Thank you RX Connected!
Judy February 25, 2020

Real Customers, Honest Reviews

Always very polite and helpful. I appreciate so much the reminders when it's time to renew my prescription! Thank you!
Betty February 21, 2020

Real Customers, Honest Reviews

great thanks
Helen February 21, 2020

Real Customers, Honest Reviews

Sheffield February 21, 2020

Real Customers, Honest Reviews

Great service.
Joe February 21, 2020

Real Customers, Honest Reviews

Patricia February 21, 2020

Real Customers, Honest Reviews

Easy process and reasonable pricing . Both good reasons to use this company .
Terry October 25, 2019
Read All Reviews
Write a Review