BRAND NAME: Betapace, Betapace AF, Sorine, Sotylize




  • Sotalol is used to treat abnormal heart rhythms such as ventricular arrhythmias (for example, ventricular tachycardia) that are life threatening and atrial fibrillation. It is not used for less severe abnormal heart rhythms.
  • Sotalol should not be used in patients with bronchial asthma, sinus bradycardia, second and third degree AV block, unless a functioning pacemaker is present.
  • It also should not be used in people with congenital or acquired long QT syndromes, cardiogenic shock, uncontrolled congestive heart failure, and people who are allergic to sotalol.


Common side effects of sotalol include:

Other side effects that may occur include:

Possible serious side effects of sotalol include:

Like other antiarrhythmic agents, sotalol can cause new or worsening ventricular arrhythmias (for example, ventricular tachycardia or ventricular fibrillation).

Sotalol may cause or worsen congestive heart failure, and it can block the symptoms of low blood glucose in diabetics.


In the U.S., 1 in every 4 deaths is caused by heart disease. See Answer

PREPARATIONS: Tablets: 80, 120, 160, and 240 mg; oral solution: 5 mg/mL; injectable solution: 15 mg/mL


PREGNANCY AND BREASTFEEDING SAFETY: Sotalol crosses the placenta and is found in amniotic fluid. Safe use by pregnant women has not been established. Sotalol is excreted in human milk. A decision should be made whether to discontinue nursing or to discontinue the drug due to risk of adverse effects in the infant.

STORAGE: Store at room temperature, 15 C - 30 C (59 F - 86 F).


  • For ventricular arrhythmias and supraventricular arrhythmias the recommended dose is 80 to 160 mg orally every 12 hours or 75 to 150 mg given intravenously every 12 hours.
  • The recommended dose for refractory life-threatening ventricular arrhythmias is 80 to 160 mg orally every 12 hours. Doses of 160 to 640 mg/day given in divided doses every 8 to 12 hours may be required.
  • The recommended dose for atrial fibrillation or flutter is 80 to 160 mg orally every 12 hours or 75 to 150 mg given intravenously every 12 hours.
  • To reduce the risk of induced arrhythmia, patients should be observed for a minimum of 3 days in a facility that can provide cardiac resuscitation and continuous electrocardiographic monitoring while on their maintenance dose.
  • The different formulations and brands of sotalol are not interchangeable.


  • Sotalol is a beta-adrenergic blocking drug that is used to treat abnormal heart rhythms. Sotalol is a first generation beta blocker in a class that includes propranolol (Inderal, InnoPran), nadolol (Corgard), penbutolol sulfate (Levatol), timolol (Blocadren), and pindolol (Visken).
  • These drugs differ from other beta blocking drugs because they are non-selective in nature, meaning that they block both beta-1 and beta-2 receptors on nerves and, therefore, will affect not only the heart but also the kidneys, lungs, gastrointestinal tract, liver, uterus, muscles surrounding blood vessels, and skeletal muscle.
  • Norepinephrine and epinephrine (adrenaline) are chemicals released within the body that attach to receptors on several types of cells, including nerves and some muscles. Attachment changes the way the cells function, either stimulating the cells or suppressing them, in part through beta receptors.
  • Sotalol prevents norepinephrine and epinephrine from binding to beta receptors on nerves. By blocking the effect of norepinephrine and epinephrine, beta blockers reduce heart rate, reduce the force of the heart's contractions, and reduce blood pressure by relaxing the muscles surrounding the blood vessels. Sotalol also directly reduces the rate at which the heart beats by reducing the rapidity of firing of the normal generator of electrical impulses in the heart (the heart's pacemaker).
  • The FDA approved sotalol in October, 1992.


Sotalol (Betapace, Betapace AF, Sorine, Sotylize) is a drug to treat abnormal heart rhythms. Sotalol reduces the firing of the hearts built-in pacemaker and it affects nerve receptors. This drug has potentially dangerous side effects and should be prescribed with caution.

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