Yes, Cardizem can be combined with other antihypertensives such as ACE inhibitors or diuretics, but the combination may lower blood pressure more than expected. Clinicians usually monitor blood pressure closely after initiating a combination therapy to adjust doses and avoid hypotension.
Peripheral oedema is a known side effect. Elevating the legs, reducing sodium intake, and wearing compression stockings may help. If swelling is persistent or severe, contact a healthcare professional as dose adjustment or an alternative medication might be required.
Cardizem is a prescription medication; you should carry it in its original packaging with a copy of the prescription. For security checks, a doctor’s letter stating the need for the medication can be helpful, especially when travelling to countries with strict drug import regulations.
Yes. Grapefruit juice inhibits the CYP3A4 enzyme that metabolises diltiazem, leading to higher blood levels and an increased risk of side-effects such as low blood pressure or bradycardia. It is recommended to avoid large quantities of grapefruit and grapefruit juice while taking Cardizem.
Blood-pressure reduction may be observed within a few hours of the first dose, but the full therapeutic effect often requires several days of consistent dosing and possible titration.
Rarely, patients report mild visual disturbances such as blurred vision, especially during episodes of low blood pressure. If visual symptoms are pronounced or sudden, seek medical attention promptly.
Both belong to the calcium-channel blocker class, but Cardizem (diltiazem) has a more pronounced effect on the AV node and is often chosen for rate control in arrhythmias, whereas amlodipine is more vascular-selective and primarily used for hypertension and angina without significant effects on heart rate.
Patients with mild hepatic impairment can usually take Cardizem, but clinicians may start at a lower dose and monitor liver function tests periodically. Severe liver disease warrants more cautious use or an alternative therapy.
Store the tablets at room temperature away from direct heat sources. Do not freeze them. If the medication has been exposed to extreme cold, check for any change in tablet integrity before use, and if in doubt, consult a pharmacist.
Cardizem is a prescription-only medication sold in the United Kingdom as a pill that contains the active ingredient diltiazem. Diltiazem belongs to the calcium-channel blocker class and is used to manage conditions affecting the heart and blood vessels. The product is supplied in several strengths - 30 mg, 60 mg, 90 mg, 120 mg, and 180 mg - and is typically prescribed by a physician or cardiology specialist. In the UK the drug is regulated by the Medicines and Healthcare products Regulatory Agency (MHRA) and is marketed by Novartis plc.
Diltiazem reduces the influx of calcium ions through L-type calcium channels that are present in cardiac muscle, smooth muscle of blood vessels, and the sino-atrial (SA) and atrio-ventricular (AV) nodes. By limiting calcium entry, the medication produces three main effects:
These actions together make diltiazem useful for treating high blood pressure (hypertension), angina pectoris (chest pain due to reduced blood flow to the heart), and certain arrhythmias.
Cardizem is approved by the MHRA for the following indications:
The medication is generally prescribed for adult patients, but the exact dosing and suitability are determined by the prescribing clinician based on the individual's health status and response to therapy.
Research has explored additional therapeutic roles for diltiazem that are not part of its official licensing in the UK:
Off-label use requires medical supervision and individualized risk assessment. It is not approved by the MHRA.
If any of these conditions apply, a healthcare professional must evaluate the risks before prescribing Cardizem.
These effects are generally reversible after dose adjustment or discontinuation.
If any of these serious symptoms develop, seek immediate medical care.
Patients should disclose all prescribed medicines, over-the-counter drugs, herbal supplements, and dietary habits to their prescriber.
| Indication | Typical Starting Dose | Maintenance Range | ||-|-| | Hypertension | 30 mg once daily (or 60 mg once daily) | Up to 120 mg once daily, titrated as needed | | Chronic stable angina | 30 mg twice daily (or 60 mg once daily) | 120-180 mg per day, divided 2-3 times | | Atrial fibrillation rate control | 30 mg twice daily | 60-180 mg per day, divided 2-3 times |
Exact dosing must be individualized by the prescribing clinician based on blood pressure, heart rate, renal and hepatic function, and tolerability.
If a dose is missed, take it as soon as remembered provided it is more than 4 hours before the next scheduled dose. Do not double-dose.
Symptoms may include severe hypotension, bradycardia, heart block, and cardiac depression. Seek emergency medical care; treatment focuses on supportive measures such as intravenous fluids, atropine for bradycardia, and vasopressors if needed. No specific antidote exists.
Abrupt cessation is generally safe, but patients with angina should discuss a tapering plan to avoid rebound chest pain. Gradual dose reduction is recommended for long-term users.
Regular follow-up appointments enable clinicians to optimise dosing while minimising adverse effects.
This article provides educational information about Cardizem and is not a substitute for professional medical advice. Treatment decisions, including use for unapproved indications, must be made under the guidance of a qualified healthcare provider. The content is intended for informational purposes and does not constitute medical recommendations. Always consult a physician before starting, stopping, or changing any medication regimen.
