Metoprolol Dosing and Administration Guidelines

Introduction to Metoprolol Therapy

The American College of Cardiology recommends initiating metoprolol tartrate at 25-50 mg twice daily or metoprolol succinate extended-release at 50-200 mg once daily, with a maximum dose of 200 mg daily for tartrate and 400 mg daily for succinate, for the treatment of hypertension 1

The typical maintenance dose range for hypertension is 50-200 mg twice daily for metoprolol tartrate, as recommended by the American College of Cardiology 2, 3, 4
Metoprolol succinate can be dosed 50-200 mg once daily for hypertension, offering the convenience of single daily dosing, according to the American College of Cardiology 1
Beta-blockers are not recommended as first-line agents for hypertension unless the patient has coexisting ischemic heart disease or heart failure, as stated by the American College of Cardiology 5

For stable angina, the usual dose of metoprolol is 50-200 mg twice daily, with dosing adjusted to achieve a target resting heart rate of 50-60 beats per minute, as recommended by the American College of Cardiology 2, 3, 4
Metoprolol should be initiated orally within the first 24 hours in patients with unstable angina/NSTEMI, in the absence of contraindications, according to the American College of Cardiology 2, 4

After 48 hours of the every-6-hour regimen, transition to a maintenance dose of 100 mg orally twice daily, as recommended by the American College of Cardiology 2
Avoid early aggressive IV beta-blockade in hemodynamically unstable patients, as it poses substantial risk of cardiogenic shock, particularly in those with heart failure, hypotension, older age, higher heart rate, or lower blood pressure, according to the American College of Cardiology 2, 4

For heart failure, use only metoprolol succinate extended-release, starting at 12.5-25 mg once daily and titrating every 2 weeks to a target dose of 200 mg once daily, as recommended by the American College of Cardiology 1, 5
Metoprolol succinate is the only metoprolol formulation proven to reduce mortality in heart failure, with a 34% reduction in all-cause mortality in the MERIT-HF trial, according to the American College of Cardiology 5

Absolute contraindications include signs of heart failure, low output state, increased risk for cardiogenic shock, PR interval >0.24 seconds, second or third-degree heart block, and active asthma or reactive airways disease, as stated by the American College of Cardiology 1
Risk factors for cardiogenic shock include age >70 years, systolic BP <120 mmHg, heart rate >110 bpm or <60 bpm, and increased time since symptom onset, according to the American College of Cardiology 1
Avoid IV metoprolol in patients with decompensated heart failure, hypotension, or hemodynamic instability, as recommended by the American College of Cardiology 1, 2, 4
Never abruptly discontinue metoprolol, as this can precipitate rebound hypertension or worsening angina, according to the American College of Cardiology 1