Nifedipine side effects?

Here are the commonly reported side effects of nifedipine, plus some safety notes. If you’re taking this medicine, check with your healthcare provider for advice tailored to you.

Common side effects (often mild and may improve with time)
- Swelling of ankles, feet, or hands (edema)
- Headache
- Flushing or warmth
- Dizziness or lightheadedness
- Palpitations or a feeling of a fast or irregular heartbeat
- Fatigue or weakness
- Nausea or upset stomach
- Gum overgrowth (gingival hyperplasia)
- Rash or itching (less common)

Less common but important side effects
- Low blood pressure (hypotension) leading to dizziness or fainting
- Reflex tachycardia (rapid heartbeat)
- Constipation (less common with nifedipine than with some other calcium channel blockers)
- Abdominal pain or upset stomach
- Liver test abnormalities (rare)

Serious side effects (seek urgent medical attention)
- Severe dizziness, fainting, or signs of very low blood pressure
- Chest pain or worsening chest pain/angina
- Signs of an allergic reaction: trouble breathing, swelling of face/lips/tongue, severe rash or hives
- Severe swelling, especially if it’s new or rapidly worsening
- Yellowing of the skin or eyes, dark urine (possible liver issue)

Notes and safety tips
- Immediate-release nifedipine can cause more abrupt drops in blood pressure and reflex tachycardia; long-acting (extended-release) forms are generally used to reduce these effects.
- Grapefruit juice can increase nifedipine levels in the blood. If you regularly drink grapefruit juice, talk to your clinician about whether it’s safe for you.
- Alcohol can intensify dizziness or lightheadedness.
- Do not stop nifedipine suddenly without talking to your prescriber, as this can cause blood pressure to rise or other issues.
- Tell your doctor about all medicines you take, including OTC meds and supplements, because nifedipine interacts with other drugs (e.g., other blood pressure medicines, nitrates, certain antifungals, and some antibiotics).

If you have a specific formulation (immediate-release vs extended-release) or a particular side effect you’re worried about, tell me and I can tailor the information. Always consult your healthcare provider for personalized advice.