Nifedipine Dosing and Safety Recommendations

Extended‑Release Formulations (Preferred)

For hypertension and stable angina, the recommended once‑daily dose of extended‑release nifedipine is 30 – 90 mg; the usual maintenance range is 30 – 60 mg, and doses above 90 mg daily are not advised. (American College of Cardiology/American Heart Association) 1
Maximum approved dose is 90 mg once daily; higher daily doses are discouraged due to lack of additional benefit and increased risk. (American College of Cardiology/American Heart Association) 1

Pediatric patients (extended‑release): start at 0.25 – 0.5 mg/kg/day, titrate up to a maximum of 3 mg/kg/day or 120 mg/day, administered once or twice daily. (American Academy of Pediatrics) 2, 3
Pregnant patients (immediate‑release preferred): give 10 – 20 mg orally, repeat after 20 minutes if needed, then 10 – 20 mg every 2 – 6 hours; do not exceed a total of 180 mg per day. (Journal of the American College of Cardiology) 4
The 2024 European Society of Cardiology (ESC) guidelines endorse extended‑release nifedipine as first‑line therapy for gestational hypertension. (ESC) 5

For angina, immediate‑release nifedipine may be given at a total daily dose of 30 – 90 mg, divided into multiple administrations throughout the day. (American College of Cardiology/American Heart Association) 1, 6, 7, 8

Immediate‑release nifedipine is contraindicated in acute coronary syndromes (unstable angina/NSTEMI) unless the patient is already receiving adequate beta‑blocker therapy. (American College of Cardiology/American Heart Association) 1, 6, 7, 8, 9, 10
In acute coronary syndrome patients, immediate‑release nifedipine has been associated with dose‑related increases in mortality and overall harm. (American College of Cardiology/American Heart Association) 9, 10
The 1999 British Hypertension Society guideline explicitly recommends that nifedipine capsules should no longer be prescribed. (British Hypertension Society) 11

Avoid immediate‑release nifedipine for acute blood‑pressure control in acute coronary syndrome patients who are not on beta‑blockers. (American College of Cardiology/American Heart Association) 9, 10
Do not use immediate‑release nifedipine in patients with severe left‑ventricular dysfunction or overt heart failure. (American College of Cardiology/American Heart Association) 6, 7, 8
Extended‑release tablets must be swallowed whole; crushing, chewing, or splitting them is prohibited. (American Academy of Pediatrics) 2, 3

The American College of Cardiology recommends a maintenance dose of extended‑release nifedipine of 30–60 mg once daily, with an absolute maximum of 90 mg daily for hypertension and stable angina. 12

For chronic angina, the American College of Cardiology states that immediate‑release nifedipine may be administered at a total daily dose of 30–90 mg, divided into multiple doses throughout the day. 12
The U.S. FDA label, as cited by the American College of Cardiology, permits oral immediate‑release nifedipine dosing of 30–90 mg per day. 12

Immediate‑release nifedipine is contraindicated in patients with acute coronary syndromes unless they are receiving adequate beta‑blocker therapy, according to the American College of Cardiology. 12
Sublingual administration of nifedipine is specifically discouraged because it can produce a prolonged effect and precipitate a rapid fall in blood pressure (Stroke Society recommendation). 13
The American College of Cardiology advises that immediate‑release nifedipine should not be used for acute blood‑pressure control in patients with acute coronary syndrome who are not on beta‑blockers. 13
Use of immediate‑release nifedipine in patients with severe left‑ventricular dysfunction or overt heart failure requires careful monitoring and is not recommended without such oversight, per the American College of Cardiology. 12

If blood‑pressure control remains inadequate at the maximum dose of 90 mg extended‑release nifedipine, the American College of Cardiology recommends adding a second antihypertensive agent rather than exceeding the nifedipine dose. 12