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Sotylize Side Effects

Generic name: sotalol

Medically reviewed by Last updated on Jun 3, 2024.

Note: This document contains side effect information about sotalol. Some dosage forms listed on this page may not apply to the brand name Sotylize.

Applies to sotalol: oral solution, oral tablet. Other dosage forms:


Oral route (Solution)

To minimize the risk of induced arrhythmia, patients initiated or reinitiated on oral sotalol or converted from IV sotalol to oral administration should be placed in a facility that can provide cardiac resuscitation, continuous electrocardiographic monitoring and calculations of creatinine clearance. Sotalol can cause life threatening ventricular tachycardia associated with QT interval prolongation. Do not initiate sotalol therapy if the baseline QTc is longer than 450 ms. If the QT interval prolongs to 500 ms or greater, the dose must be reduced, the interval between doses prolonged, or the drug discontinued. Adjust the dosing interval based on creatinine clearance.

Oral route (Tablet)

To minimize the risk of drug-induced arrhythmia, initiate or reinitiate oral sotalol in a facility that can provide cardiac resuscitation and continuous electrocardiographic monitoring. Sotalol can cause life threatening ventricular tachycardia associated with QT interval prolongation. If the QT interval prolongs to 500 msec or greater, reduce the dose, lengthen the dosing interval, or discontinue the drug. Calculate creatinine clearance to determine appropriate dosing.

Serious side effects of Sotylize

Along with its needed effects, sotalol (the active ingredient contained in Sotylize) may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur while taking sotalol:

More common

Less common


Incidence not known

Get emergency help immediately if any of the following symptoms of overdose occur while taking sotalol:

Symptoms of overdose

Other side effects of Sotylize

Some side effects of sotalol may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects.

Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

More common

Less common


For Healthcare Professionals

Applies to sotalol: intravenous solution, oral solution, oral tablet.


Very common (10% or more): Bradycardia (up to 16%), chest pain (up to 16%), palpitation (up to 14%)

Common (1% to 10%): Edema, abnormal ECG, hypotension, proarrhythmia (including Torsade de Pointes), syncope, heart failure, presyncope, vasodilation, Automatic Implantable Cardioverter-Defibrillator (AICD) discharge, hypertension, stroke[Ref]

Nervous system

Very common (10% or more): Fatigue (up to 20%), dizziness (up to 20%), asthenia (up to 13%), light headedness (up to 12%)

Common (1% to 10%): Headache, perspiration, paresthesia[Ref]


Very common (10% or more): Dyspnea (up to 21%)

Common (1% to 10%): Pulmonary problem, upper respiratory tract problem, asthma[Ref]


Very common (10% or more): Nausea/vomiting (up to 10%)

Common (1% to 10%): Appetite disorder, diarrhea, dyspepsia, abdominal pain, colon problem, flatulence, cramps[Ref]


Common (1% to 10%): Weight change[Ref]


Common (1% to 10%): Rash[Ref]


Common (1% to 10%): Extremity pain, back pain[Ref]


Common (1% to 10%): Genitourinary disorder, sexual dysfunction[Ref]


Common (1% to 10%): Bleeding[Ref]


Common (1% to 10%): Infection[Ref]


Common (1% to 10%): Localized pain[Ref]


Common (1% to 10%): Vision problem[Ref]


Common (1% to 10%): Fever, abnormal lab value

Frequency not reported: Taste abnormalities, hearing disturbances[Ref]


Common (1% to 10%): Depression, sleep problem, altered consciousness, anxiety, mood change[Ref]

Frequently asked questions


1. Gossinger HD, Siostrzonek P, Schmoliner R, Grimm G, Jager U, Mosslacher H (1987) "Sotalol-induced torsades de pointes in a patient with pre-existent normal response to programmed ventricular stimulation." Eur Heart J, 8, p. 1351-3

2. (2001) "Product Information. Betapace (sotalol)." Berlex Laboratories

3. Hohnloser SH, Vandeloo A, Baedeker F (1995) "Efficacy and proarrhythmic hazards of pharmacologic cardioversion of atrial fibrillation: prospective comparison of sotalol versus quinidine." J Am Coll Cardiol, 26, p. 852-8

4. British Medical Association. Royal Pharmaceutical Society of Great Britain. Joint Formulary Committee (2006) British National Formulary.

5. Pharmaceutical Society of Australia (2006) APPGuide online. Australian prescription products guide online.

6. Lehtonen A, Hietanen E, Marniemi J, Peltonen P, Nikkila EA (1983) "Effect of sotalol withdrawal on serum lipids and lipoprotein lipase activity." Int J Clin Pharmacol Ther Toxicol, 21, p. 73-6

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Some side effects may not be reported. You may report them to the FDA.