Pharm

Propranolol

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Propranolol, Inderal

  • See Also
  1. Beta Blocker
  • Mechanism
  1. Non-Selective Beta Blocker
  2. Beta 1 Adrenergic Receptor Antagonist
    1. Decreases Heart Rate, Cardiac Output, and Sympathetic System output (decreased renin release)
  3. Beta 2 Adrenergic Receptor Antagonist
    1. Risk of bronchoconstriction
  • Indications
  • Primary
  1. Hyperthyroidism
  2. Performance Anxiety
  3. Essential Tremor
  4. Migraine Headache Prophylaxis
  • Indications
  • Selective Beta Blockers Preferred instead of Propranolol
  1. Hypertension
  2. Atrial Fibrillation Rate Control
  • Adverse Effects
  1. See Beta Blocker
  2. Transient Hypertension
    1. Beta 2 Adrenergic Receptor Antagonists transiently constrict large arteries
  3. CNS Adverse Effects
    1. CNS penetration
  4. Rebound Hypertension
    1. Sudden discontinuation of Propranolol
  • Drug Interactions
  1. Cimetidine
    1. Increases Propanolol serum levels
  • Dosing
  • Oral
  1. Regular: 40 mg PO bid (MAX: 640 mg/day)
  2. Extended: 80 mg PO qd (MAX: 320 mg/day)
  • Dosing
  • Intravenous
  1. Load: 1-3 mg IV over 2-5 minutes
  2. Repeat every 2 minutes to a total dose of 0.1 mg/kg
  3. Sustained response for 6-8 hours