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Home > Blood Pressure Medications (Calcium & Beta Blockers) > Tiazac or Equivalent

Tiazac (Diltiazem Hydrochloride Extended Release)

Type
Product
Manufacturer
Country
Dosage
Qty-Price (USD)
Type: drug type
Product: Tiazac Capsule
Manufacturer: Bausch Health
Country: Canada
Dosage: 120 mg
Qty-Price (USD):
Type: drug type
Product: Tiazac Capsule
Manufacturer: Bausch Health
Country: Canada
Dosage: 180 mg
Qty-Price (USD):
Type: drug type
Product: Tiazac Capsule
Manufacturer: Bausch Health
Country: Canada
Dosage: 240 mg
Qty-Price (USD):
Type: drug type
Product: Tiazac Capsule
Manufacturer: Bausch Health
Country: Canada
Dosage: 300 mg
Qty-Price (USD):
Generic Equivalent of Tiazac
Type
Product
Manufacturer
Country
Dosage
Qty-Price (USD)
Type: drug type
Product: Diltiazem Hydrochloride Extended Release Capsule
Manufacturer: Generic
Country: Canada
Dosage: 120 mg
Qty-Price (USD):
Type: drug type
Product: Diltiazem Hydrochloride Extended Release Capsule
Manufacturer: Generic
Country: Canada
Dosage: 180 mg
Qty-Price (USD):
Type: drug type
Product: Diltiazem Hydrochloride Extended Release Capsule
Manufacturer: Generic
Country: Canada
Dosage: 240 mg
Qty-Price (USD):
Type: drug type
Product: Diltiazem Hydrochloride Extended Release Capsule
Manufacturer: Generic
Country: Canada
Dosage: 300 mg
Qty-Price (USD):
Type: drug type
Product: Diltiazem Hydrochloride Extended Release Capsule
Manufacturer: Generic
Country: Canada
Dosage: 360 mg
Qty-Price (USD):
Tiazac online Canadian Pharmacy

Tiazac Information

portrait medically reviewed by Carol Hou (BSc. Pharm) on May 16, 2025.
A licensed pharmacist (Licensed Community Pharmacies Directory | College of Pharmacists of British Columbia) with over 20 years of experience in medication management, specifically medication safety, she has reviewed the information for accuracy and completeness.

Tiazac and Diltiazem Hydrochloride Extended-release at CanadaPharmacyOnline.com

Brand Tiazac, manufactured by Bausch Health, is available in many countries worldwide, including Canada.

Generic diltiazem hydrochloride extended-release is sourced from manufacturers that meet applicable regulatory standards. The specific manufacturer of your dispensed medication may vary.

Important Information about Generic Diltiazem Hydrochloride Extended-release:

Generic diltiazem hydrochloride extended-release contains the same active ingredient as brand-name Tiazac and is required to meet the same safety, effectiveness, and quality standards. This means it is designed to work in the same way as Tiazac. Studies have demonstrated bioequivalence between generic and brand-name diltiazem hydrochloride extended-release, meaning they have comparable absorption rates and overall effects. However, individual responses to any medication can vary. If you have any questions about using generic diltiazem hydrochloride extended-release, talk to your doctor or pharmacist.

For more information about generic drug approval and bioequivalence, please refer to Access to Generic Drugs in Canada | Canada.ca

Dosage:

The brand Tiazac and the generic diltiazem hydrochloride are available as 120 mg, 180 mg, 240 mg, 300 mg, and 360 mg oral extended-release capsules.

Your doctor will determine the appropriate dosage based on the individual needs and medical conditions.

Usage:

Tiazac (diltiazem hydrochloride extended-release) is a prescription medication used to treat mild to moderate hypertension and chronic stable angina (refer to the product labeling information). Hypertension or high blood pressure is a condition where the force of blood pushing against the artery walls is consistently too high. This can damage the arteries over time and increase the risk of health conditions like heart attack and stroke. Chronic stable angina has a stable pattern of pain that lasts at least two months with no changes in severity, character, or triggering circumstances.

Mechanism of Action:
Tiazac (diltiazem hydrochloride extended-release) is a non-dihydropyridine calcium channel blocker. It relaxes the blood vessels so the heart does not have to pump as hard. The relaxation of the blood vessels and a slowing of the heart rate contribute to lowering blood pressure and relieving angina.

Take Tiazac exactly as your doctor prescribes, following the instructions in the product monograph | Bausch Health. Consult your doctor for personalized guidance and safe use.

The information below summarizes some, but not all, potential side effects, risks, and interactions. Before taking Tiazac, it is essential to discuss all potential side effects, risks, and interactions with your doctor or pharmacist.

Side Effects:

The information below is a partial list of side effects; individual reactions can vary. Before starting Tiazac, it is crucial to discuss potential side effects and risks with your doctor or pharmacist.

Common side effects – These are examples of some common side effects of Tiazac, but others are possible. Contact your doctor promptly if any side effects are persistent, worsening, or concerning or if you experience any other concerning symptoms.
• Constipation
• Dizziness
• Flushing
• Headache
• Lightheadedness
• Nausea
• Swelling of the ankles or feet (edema)
• Tiredness

Serious or rare side effects – Stop taking Tiazac and seek immediate medical attention right away if you experience any of the following:
• Allergic reactions, including angioedema, hives, and trouble breathing
• Liver problems, including dark urine, pale stools, severe abdominal pain, and yellowing of the skin or eyes
• Severe heart problems, including fainting, chest pain, irregular heartbeat, shortness of breath, and severe dizziness
• Severe low blood pressure (hypotension)
• Severe skin reactions, including blistering skin, fever, and sores in the mouth or eyes

Contraindications:

This is not an exhaustive list of contraindications. It is crucial to discuss all your medical conditions, past and present, and all medications you are taking with your doctor or pharmacist before starting Tiazac.

Tiazac should not be used if:
• Are allergic to diltiazem hydrochloride extended-release or any of the inactive ingredients in Tiazac
• You have an acute myocardial infarction and pulmonary congestion documented by x-ray
• You have second- or third-degree AV block except in the presence of a functioning ventricular pacemaker
• You have severe hypotension (less than 90 mmHg systolic)
• You have sick sinus syndrome unless you have a functioning ventricular pacemaker

Tell your doctor about all of your medical conditions, past and present, before starting Tiazac. This is crucial because certain conditions can affect whether Tiazac is right for you. These conditions may include, but are not limited to:
• Cardiac conduction
• Heart failure
• Hypotension
• Kidney disease
• Liver disease

Dizziness and Drowsiness:
Tiazac may cause dizziness or drowsiness. Avoid getting up too fast from a sitting or lying position. Otherwise, you may feel dizzy. Avoid driving, operating machinery, or engaging in activities that require alertness until you understand how it affects you.

Congestive Heart Failure:
Diltiazem can have an adverse inotropic effect, meaning it can reduce the force of heart muscle contractions. This can potentially worsen heart failure. Low Blood Pressure (Hypotension):

Diltiazem is a calcium channel blocker, and one of its primary actions is to relax blood vessels. This relaxation leads to a decrease in blood pressure. Therefore, individuals who already have low blood pressure are at an increased risk of experiencing further drops in blood pressure when taking Tiazac. Very low blood pressure can lead to inadequate blood flow to vital organs.

Alcohol:
Drinking alcohol when taking Tiazac can further lower your blood pressure, leading to symptoms like dizziness, lightheadedness, fainting, or more serious complications. Avoid alcohol when taking this medicine.

Grapefruit:
Excessive grapefruit consumption can increase the side effects of diltiazem. It is best that you speak to your doctor if this bothers you.

Drug Interactions:

Before taking Tiazac, it is essential to discuss all potential risks and interactions with your doctor or pharmacist. For complete information about potential drug interactions, consult the Details for Tiazac - Drug and Health Product Register, https://hpr-rps.hres.ca/details.php?drugproductid=184, and discuss any concerns with your healthcare provider.

Provide your doctor with a complete list of all your medications, including prescriptions, over-the-counter (OTC) drugs, vitamins, and herbal supplements. Tiazac can interact with other medicines but is not limited to cimetidine, St. John’s wort, cyclosporine, erythromycin, phenobarbital, theophylline, benzodiazepines, rifampin, and quinidine.

Pregnancy and Breastfeeding:

If you are pregnant or become pregnant, tell your doctor before using Tiazac. It is unknown if diltiazem will harm an unborn baby. It is crucial to discuss the risks and benefits of using Tiazac with your doctor before taking it. If you are breastfeeding or plan to breastfeed, inform your doctor. Diltiazem is excreted in human breast milk, meaning that the medication can be transferred from the mother to the nursing infant. It is crucial to discuss the risks and benefits of using Tiazac with your doctor before taking it.

Frequently Asked Questions about Tiazac at Canada Pharmacy Online

Why is Tiazac more affordable in Canada than in the United States?

Prescription drug prices, including Tiazac, are generally lower in Canada than in the US due to a combination of factors, primarily government price regulations, differing market dynamics, and other economic considerations. In Canada, provincial and federal governments negotiate drug prices with pharmaceutical companies, which often results in lower costs compared to the US, where market forces play a more significant role. For more information, see the FAQs on Prescription Drug Importation from the Kaiser Family Foundation (KFF): https://www.kff.org/health-costs/issue-brief/faqs-on-prescription-drug-importation/

Can I cut or split a Tiazac capsule?

It is generally not recommended to cut, split, or chew Tiazac capsules. While there may be no definitive evidence that crushing them changes how the medication works, it is not recommended, as it could potentially affect how the medication is released or absorbed. If you have difficulty swallowing, you may carefully open the capsule and sprinkle its contents on a spoonful of applesauce. However, inform your doctor before you do this. Swallow the applesauce immediately without chewing and follow with a glass of cool water to ensure the complete swallowing of the capsule’s contents. The applesauce should not be hot, and it should be soft enough to be swallowed without chewing. Any capsule contents/applesauce mixture should be used immediately and not stored for future use.

How much is the shipping?

Our shipping fee is a flat rate of $10.00 per order. Our pharmacy focuses on getting you the lowest prices on high-quality products.

How do I order from your pharmacy?

Ordering from us is very simple. You can purchase online or call Customer Service at 1866.920.3784. For additional information or to learn about the ordering process, visit our How to Order page.

Is there a limit on how many Tiazac capsules I am allowed to order at one time?

CanadaPharmacyOnline.com can only dispense a maximum of a three-month supply of Tiazac at one time, as per your doctor's prescription.

Can I buy Tiazac over the counter from you?

No, Tiazac requires a valid prescription from your doctor. We do not sell this product without a valid prescription.

Do you ship to the United States?

Yes, we do. It usually takes between 7 and 18 business days to receive your order from our pharmacy.

What is the difference between Tiazac 120 mg, 180 mg, 240 mg, 300 mg, and 360 mg?

The difference in dosage represents the amount of active ingredient(s) present in the drug.

What is the best time to take Tiazac?

It is crucial to follow your doctor's instructions and the directions on your prescription label. They will determine the best time for you based on your condition and individual needs.

Can You Take Tiazac on an empty stomach?

You can take Tiazac with or without food, but you should take it the same way every time (always with food or always without food).

Blog Posts:

Natural Ways to Lower Your Blood Pressure

Latest News:

Effects of diltiazem and metoprolol on levels of high-sensitivity troponin I in patients with permanent atrial fibrillation: a randomized trial (study published on March 14, 2025)

Similar Drugs in the category of Blood Pressure Medications (Calcium & Beta Blockers):

   Bystolic    Norvasc    Inderal    Tenormin    Toprol XL

The information on this page is sourced from independent third parties contracted by CanadaPharmacyOnline. While we cannot guarantee its medical accuracy, we strongly recommend consulting a healthcare professional for personalized advice regarding medications or medical conditions.

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Prescriptions Dispensed from Canada are Dispensed by Candrug Pharmacy #18985. 202A 8322-130th Street, Surrey, British Columbia, Canada V3W 8J9, 604-543-8711. Pharmacy Manager: Carol Hou.
This pharmacy is duly licensed in the province of British Columbia, Canada by the College of Pharmacists of BC. If you have any questions or concerns you can contact the college at: 200-1765 West 8th Ave Vancouver, BC V6J 5C6 Canada.
All prices are in US dollars.
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