Nifedipine — Uses, Dosage, Side Effects & Safety

Drug class: Calcium Channel Blocker (Dihydropyridine)

Overview

Nifedipine is a prescription medication used to treat high blood pressure (hypertension) and certain types of chest pain (angina). It works by relaxing and widening blood vessels, making it easier for your heart to pump and lowering your blood pressure. This medicine belongs to a group called calcium channel blockers. By blocking calcium from entering the muscle cells of the heart and blood vessels, nifedipine helps reduce the workload on the heart and improves blood flow. Key points: Take nifedipine exactly as prescribed, do not stop suddenly without your doctor’s advice, and let your healthcare provider know about any side effects or other medications you are taking.

Therapeutic uses

• Hypertension
• Angina Pectoris (Chronic Stable Angina)
• Prinzmetal's Angina (Vasospastic Angina)
• Raynaud's Phenomenon

Common side effects

• Headache
• Dizziness
• Peripheral Edema
• Flushing
• Palpitations
• Gingival Hyperplasia
• Hypotension

Frequently Asked Questions about Nifedipine

What is nifedipine used for?

Nifedipine is used to treat high blood pressure (hypertension) and certain types of chest pain (angina). It helps relax blood vessels and improve blood flow.

How quickly does nifedipine work?

Immediate-release forms work within 20–30 minutes, while extended-release forms may take several hours to reach full effect. Blood pressure lowering is usually seen within a few days.

Can I drink grapefruit juice while taking nifedipine?

No. Grapefruit juice can increase the level of nifedipine in your blood, raising the risk of side effects.

What should I do if I experience swelling in my ankles or feet?

Mild swelling is a common side effect. If it becomes severe or is accompanied by shortness of breath or rapid weight gain, contact your doctor.

Is nifedipine safe during pregnancy?

Nifedipine may be used during pregnancy if the benefits outweigh the risks, but only under close medical supervision.

Can I stop taking nifedipine suddenly?

No. Stopping suddenly can worsen your condition. Always consult your doctor before making changes to your medication.

What other medications may interact with nifedipine?

Medications such as beta-blockers, digoxin, certain antibiotics, antifungals, and other blood pressure drugs may interact with nifedipine. Always inform your healthcare provider about all medicines you take.

Educational information only. Always consult a qualified healthcare professional before starting, stopping, or changing any medication.