Propranolol Tablet Splitting Guidelines

Rationale and Clinical Applications

• The American College of Cardiology suggests that propranolol tablets can be safely cut in half for dosing purposes, with the score line facilitating accurate splitting when needed for dose adjustment 1, 2
• Propranolol is available in various dosage forms, including scored tablets that are intended to be split when necessary, allowing for dose titration and flexibility 2
• The scoring on the tablet is specifically designed to ensure relatively equal halves when split along the score line, which is important for initial dose titration in patients with cardiovascular conditions and for adjusting doses for patients who need smaller increments than commercially available tablets 3, 4, 1
• The European Society of Cardiology implies that splitting allows for gradual dose titration, which is particularly important when initiating beta-blocker therapy and for patients who require precise dose adjustments between standard tablet strengths 5, 2
• The American Heart Association suggests that tablet splitting may be needed for elderly patients or those with hepatic impairment who may require lower doses, and for rate control in atrial fibrillation when dose adjustments are needed 1, 6

Important Considerations

• The American College of Cardiology recommends always splitting along the score line to ensure relatively equal halves 3