Medicines have benefits and some have risks. Always read labels and use as directed. If symptoms persist or you have side effects see your health professional.

Buy Diltiazem Sr Online, no current Rx required, online Dr consult - FREE shipping*

Diltiazem Sr is a calcium channel blocker used to help manage high blood pressure, reduce the frequency and severity of angina, and to correct certain heart arrhythmias. In off-label use, patients sometimes buy Diltiazem Sr to prevent cluster headaches.

This medication can be used in all ages, though younger patients will require dosage adjustments which should be determined by a doctor.

Patients usually buy Diltiazem Sr under its brand name, Cardizem SR. The medication is sold under a very wide variety of other brand or generic names, however, and there are many similar formulas. Patients are welcome to contact us to ensure the correct version of Diltiazem is purchased.

Treatment Overview

Diltiazem Sr has two primary effects; it relaxes blood vessels, which reduces the amount of work the heart has to do to move blood, and it also works on the heart itself, reducing the rate, force, and conduction speed of each heartbeat. Combined these two actions lower blood pressure, reduce the frequency and severity of angina, and stabilize arrhythmia.

Patients planning to buy Diltiazem Sr for heart arrhythmia should note that it is not effective in all cases; a doctor should be consulted before a treatment is chosen. Likewise those who buy Diltiazem Sr for angina should still keep a rescue treatment, such as nitroglycerin, on-hand for use if needed; Diltiazem Sr may reduce the frequency of attacks, but will not stop one in progress.

Diltiazem Sr comes in capsules. As this is a long-acting version of Diltiazem, tablets are taken just once per day and must be swallowed whole. Capsules can be opened and sprinkled on soft food or mixed in fluids if desired, provided the mixture is then swallowed without chewing.

Most patients find 120 to 180 mg once per day to be sufficient. Dosage may be increased at two-week intervals, if needed, up to 480 mg taken once per day.

Full benefit should be seen by two weeks, and it's unlikely dosage adjustments will be made sooner. The exception to this rule is if blood pressure drops too low---a risk no matter what Diltiazem Sr is being taken for---in which case dosage should be lowered immediately.

Other medications are often given along with Diltiazem Sr; however, these should be taken only with doctor approval. This medication can interact with a variety of other medications, both those for cardiovascular conditions and those that are unrelated.


A big concern with Diltiazem Sr treatment is low blood pressure. Warning signs---which should be brought to the attention of a doctor---include:

  • Dizziness
  • Lightheadedness
  • Fainting
  • Blurred vision
  • Slurred speech
  • Fatigue
  • Inability to concentrate
  • Powerful food cravings

Most side effects associated with Diltiazem Sr are mild and not cause for concern, including:

  • Nausea
  • Flushing
  • Constipation
  • Weakness
  • Mild dizziness
  • Headache

The above only need to be brought to the attention of a physician if severe or persistant. They will usually stop occurring as the body adjusts to treatment.

More rarely serious side effects may occur, which do warrant medical attention:

  • Severe or persistent nausea or vomiting
  • Mental or mood changes
  • Severe weakness or fatigue
  • Severe stomach or abdominal pain
  • Jaundice
  • Irregular, rapid, or pounding heartbeat

Again, always double-check with a doctor or pharmacist before mixing any other medications with Diltiazem Sr.

Buy Diltiazem Sr without Leaving Home

Kiwi Drug has been online since 2005 and is backed by an international network of brick & mortar pharmacies that have been operating for decades longer. We offer a number of assurances and conveniences to ensure clients have easy, affordable, and safe access to vital medications:

  • We are subject to regulatory oversight like our real-world counterparts.
  • Our online storefront saves us tremendous overhead, allowing us to offer medications at much lower prices without cutting quality.
  • Our fully-licensed online doctor is authorized to issue prescriptions for many medications.
  • We utilize state-of-the-art security software to ensure your personal data is safe.

Clients will need a prescription to buy Diltiazem Sr from Kiwi Drug. If you don't have one, you may want to take advantage of our online doctor services---simply answer the questions provided during checkout to see if you qualify. There is no extra charge for our online doctor services.

Patients who already have a prescription to buy Diltiazem Sr will be given options to transfer it to us after completing checkout.

We're always here to help if you have any questions or need a hand with your order.

**Important note for patrons: The information on this page is not official label or safety information as written by the manufacturer or reviewed by the FDA. We only list for sale and refer orders to our affiliates for medications approved in the country where they are licensed, and any product requiring a prescription must be sold under the direction of a licensed physician.
Like us on Facebook and receive 10% off your next order!* New Zealand Pharmacy
 » is ranked 4.9 out of 5. Based on 2273 user reviews.
Site Map
* 10% one-time discount applies to orders over $100