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Disclaimer: This information is for general guidance and is not a substitute for medical advice. Cardizem may require a prescription depending on local rules. Always follow the instructions given by your clinician and read the official patient information leaflet that accompanies your medicine.

What is Cardizem?

Cardizem is a brand name for the medicine diltiazem. It belongs to a group of medicines known as calcium channel blockers.

It is used to treat high blood pressure and to prevent chest pain caused by angina. It can also help control certain abnormal heart rhythms when prescribed by a clinician.

Cardizem can come in different forms, such as tablets or capsules designed for extended release, or other formulations as supplied by your doctor. Always follow the exact instructions provided with your product.

In the United Kingdom, Cardizem may require a prescription depending on local rules. This page provides general information and does not replace medical advice from a doctor or pharmacist.

If you have questions about why Cardizem has been prescribed for you, ask your pharmacist or doctor for clarification.

Uses

Cardizem is prescribed to help lower high blood pressure. Lowering blood pressure reduces the risk of heart problems such as stroke or heart attack.

It is also used to prevent chest pain due to angina and to improve symptoms in some heart rhythm problems, under supervision of a clinician.

Some patients may receive Cardizem as part of a broader treatment plan for heart conditions. The exact indications depend on the product form and your health needs.

Take Cardizem exactly as prescribed. Do not change the dose or form without speaking to your doctor or pharmacist first.

Your clinician will explain how Cardizem fits with any other medicines you are taking and your overall treatment goals.

How Cardizem works

Diltiazem blocks calcium from entering muscle cells in the heart and blood vessels. This relaxation helps to widen the arteries and reduce the workload on the heart.

By relaxing blood vessels, Cardizem lowers blood pressure and can help improve blood flow to the heart, reducing angina episodes in some people.

In certain heart rhythm problems, Cardizem can slow the heart rate and modulate electrical conduction in the heart, which may help achieve a more regular rhythm under medical supervision.

Because Cardizem affects heart rate and blood pressure, it is important to use it under the care of a clinician who can monitor your response and adjust treatment if needed.

Individual response varies with dose, form, and other health factors. Always follow the plan agreed with your doctor or pharmacist.

How to use Cardizem

Use Cardizem exactly as prescribed by your clinician. The instructions may vary with the product form and dose prescribed for you.

Swallow tablets or capsules with water. Do not crush or chew if the product is an extended-release formulation unless your pharmacist tells you it is safe to do so.

Take Cardizem at about the same time each day to help you remember. Do not change the timing or dose without talking to your healthcare professional.

If you miss a dose, take it as soon as you remember, unless it is almost time for your next dose. Do not double the dose to make up for a missed one. If you are unsure what to do, contact your clinician or pharmacist for advice.

Do not stop taking Cardizem suddenly without advice from your clinician. Stopping abruptly can worsen symptoms or raise blood pressure.

Your doctor may advise monitoring your blood pressure and heart rate during treatment. If you notice persistent dizziness, very slow heartbeat, or fainting, seek medical help promptly.

Who should avoid Cardizem

Cardizem may not be suitable for everyone. Do not take Cardizem if you have a known allergy to diltiazem or any other ingredient in the product.

The medicine should be used with caution in people with very low blood pressure or certain heart rhythm problems unless a clinician is guiding treatment.

It may not be appropriate for people with certain kinds of heart failure or those with a recently completed heart attack without specialist supervision.

Discuss your full medical history with your clinician, including kidney or liver problems, pregnancy plans, or breastfeeding, before starting Cardizem.

If you are unsure whether Cardizem is right for you, ask your doctor or pharmacist to review your health conditions and current medicines.

Warnings

Cardizem can cause dizziness or lightheadedness, especially when standing up quickly. Rising slowly can help reduce this effect.

Do not stop taking Cardizem suddenly without discussing it with your clinician. A gradual reduction may be recommended to avoid a rebound effect on blood pressure.

Tell your clinician about all medicines you take, including over-the-counter medicines, vitamins, and herbal products, since some substances can interact with Cardizem.

If you experience chest pain that worsens, severe shortness of breath, fainting, or signs of an allergic reaction, seek urgent medical help.

In people with liver disease, kidney disease, or certain heart conditions, dose adjustments or special monitoring might be needed. Your clinician will determine the best approach for you.

Side effects

Common side effects include dizziness, headaches, flushing, and tiredness. Some people notice swelling in the ankles or feet.

You may feel a slower heart rate or lower blood pressure. If these symptoms are persistent or troublesome, contact your clinician for advice.

Other possible effects include nausea, abdominal discomfort, or a sensation of warmth. These are usually mild and temporary.

Serious side effects are rare but require immediate medical attention. Seek help if you experience severe swelling, chest pain, severe allergic reactions, or yellowing of the skin or eyes or dark urine.

Interactions

Cardizem can interact with other medicines, including some heart medicines such as beta-blockers or certain anti-arrhythmics. Your clinician will consider these interactions when planning your treatment.

A few antibiotics, antifungal medicines, or antiviral drugs can affect how Cardizem works or increase side effects. Tell your pharmacist about all medicines you take, even if they seem simple or over-the-counter.

Grapefruit juice or grapefruit products may affect absorption of some Cardizem formulations. Ask your pharmacist if you should limit or avoid grapefruit while taking Cardizem.

Alcohol can enhance dizziness or dizziness-related side effects. If you drink alcohol, discuss how much is safe with your clinician.

Always inform your healthcare provider about all medicines and supplements you use to avoid potential interactions.

Pregnancy

The safety of Cardizem during pregnancy has not been established in all situations. It may be prescribed if the potential benefit justifies the risk to the unborn baby.

If you are pregnant or planning pregnancy, discuss with your clinician before starting Cardizem. Do not start or stop treatment without medical advice.

Breastfeeding while taking Cardizem should be discussed with a clinician because the medicine may pass into breast milk and could affect a nursing infant.

Decision-making about Cardizem in pregnancy should involve your doctor, who can review benefits, risks, and alternatives in your particular case.

FAQ

Cardizem information commonly asked questions and simple guidance for everyday use. The answers here are general and should not replace advice from your clinician or pharmacist.

How quickly does Cardizem start to work for blood pressure and angina?

The time to notice a change can vary. Some people see an effect on blood pressure within days, while improvements in angina may take a little longer. Always report persistent symptoms to your clinician.

Check your readings as advised by your doctor. Do not adjust the dose on your own if you do not see immediate changes.

What should I do if I miss a dose?

Take the missed dose as soon as you remember unless it is almost time for your next dose. If it is nearly time for the next dose, skip the missed one and continue the regular schedule. Do not double up to make up for a forgotten dose.

If you are unsure what to do after missing a dose, contact your pharmacist or doctor for guidance.

Can Cardizem be taken with other heart medicines?

Cardizem is sometimes used with other heart medicines under medical supervision. Some combinations require closer monitoring because they can affect heart rate or blood pressure.

Always tell your clinician about all medicines you take, including non-prescription medicines and supplements.

How long will I need to take Cardizem?

For many conditions, long-term treatment is possible if it helps maintain blood pressure and heart function. Do not stop Cardizem suddenly without your clinician’s advice, as this may worsen your symptoms.

Your doctor will review your treatment regularly and adjust as needed based on your response and any side effects.

What are the common side effects I might notice?

Common side effects include dizziness, headaches, flushing, and ankle swelling. Some people may feel more tired than usual or notice a slower heartbeat.

If side effects are bothersome or do not go away, talk to your pharmacist or doctor about possible adjustments.

What should I do if I develop chest pain or feel faint?

Chest pain that is new, worse, or different from usual requires medical assessment. If you become severely breathless or faint, seek urgent medical help.

Your clinician will determine whether any change in treatment is needed. Do not adjust your therapy on your own.

Can I travel or drive while taking Cardizem?

Some people feel dizzy or lightheaded, which can affect driving or operating machinery. If you notice these symptoms, exercise caution and avoid activities that require full alertness until you know how Cardizem affects you.

Discuss travel plans with your clinician if you have questions about how Cardizem may affect you during travel or physical activity.

Is Cardizem safe during pregnancy or breastfeeding?

Cardizem safety in pregnancy is assessed on an individual basis. Do not start or stop treatment without consulting your clinician.

Breastfeeding while taking Cardizem should be discussed with a clinician, as the medicine may pass into breast milk.

Should I monitor my blood pressure or heart rate at home?

Home monitoring can help you and your clinician gauge how well Cardizem is working. Follow the monitoring plan provided by your clinician and report any unusual readings promptly.

Keep a simple record of your measurements to share during clinic visits.

What should I do if I want to stop Cardizem?

Discuss stopping with your clinician. They may plan a gradual reduction to avoid worsening symptoms or rebound effects.

Do not stop abruptly without medical advice, even if you feel well.

Are there foods I should avoid or limit while taking Cardizem?

There is no universal list of foods to avoid, but a balanced diet is recommended. Ask your clinician or pharmacist for any specific guidance related to your health needs.

A healthy lifestyle, including avoiding excess salt and saturated fat, can support blood pressure management in combination with Cardizem.

Sources

General information on Cardizem is based on standard pharmacology and common clinical practice guidelines used in the United Kingdom. For product-specific information, always refer to the patient information leaflet supplied with your medicine.

Official guidance from national health services and regulatory authorities provides context on indications, safety, and monitoring for diltiazem-containing medicines. Always consult a pharmacist or doctor if you have questions about your treatment plan.

For further information, discuss with your doctor or pharmacist and review the product packaging and insert included with your Cardizem prescription. If you have ongoing questions, they can provide personalised advice based on your health history.