Procardia side effects: what to expect

If your doctor prescribed Procardia (nifedipine) for high blood pressure or angina, you probably want to know what side effects are likely and which ones need urgent care. Procardia is a calcium channel blocker that relaxes blood vessels. That helps lower blood pressure, but the same action can cause predictable reactions—some mild, some more serious. Here’s a plain, useful guide so you know when to relax and when to call your doctor.

Common, usually mild side effects

The most common things people notice are headache, flushing (warm face or neck), lightheadedness or dizziness, and swelling in the ankles or feet. These happen because blood vessels widen and fluid can pool in the legs. Some people get a fast heart rate or palpitations, constipation, or mild nausea. Immediate-release nifedipine can cause more sudden drops in blood pressure and reflex fast heartbeat, so doctors often prefer extended‑release versions to reduce that risk.

Most mild side effects show up in the first days or weeks and get better as your body adjusts. If swelling or dizziness is annoying but not dangerous, your doctor may lower the dose or switch to the long‑acting form. Don’t stop the medicine on your own—sudden withdrawal can spike your blood pressure.

Serious side effects and when to act

Some reactions need fast medical attention. Call emergency services or your prescriber if you have severe dizziness, fainting, very low blood pressure (feeling faint or confused), chest pain, or a very fast/irregular heartbeat. Rarely, allergic reactions like hives, swelling of the face or throat, or trouble breathing can occur and need immediate care.

Also watch for signs of liver problems—yellowing skin or eyes, dark urine, or persistent stomach pain—and tell your doctor right away. If you notice sudden, painful swelling in one leg or signs of infection where swelling is worse, seek help; Procardia can increase fluid retention that masks other issues.

Drug interactions matter. Grapefruit and grapefruit juice raise nifedipine levels and can increase side effects—avoid them. Combining Procardia with some other blood pressure medicines, certain antifungals, or strong antibiotics can change how the drug works. Always tell your doctor about every prescription, OTC drug, and supplement you take.

Simple steps can cut side effects: take the medicine exactly as prescribed (often once daily for extended‑release), stand up slowly to avoid dizziness, avoid hot baths or saunas that can worsen low blood pressure, limit alcohol, and monitor your weight and swelling. Keep a blood pressure log for a few weeks so you and your doctor can decide if the dose is right.

If you have existing heart problems, liver disease, or are pregnant or breastfeeding, talk with your provider before starting Procardia. They’ll choose the safest form and dose. When in doubt, call your healthcare team—better safe than sorry.