What is the difference between Flecainide Acetate Tablet and Sotalol Hydrochloride?

Flecainide Acetate Tablet and Sotalol Hydrochloride are both Antiarrhythmics, so they work through the same broad mechanism. They differ in dosing, half-life, side-effect frequency, and how individual patients tolerate them. See the head-to-head sections below for the specifics.

Is Flecainide Acetate the same as Sotalol Hydrochloride?

No. Flecainide Acetate (Flecainide Acetate Tablet) and Sotalol Hydrochloride (Sotalol Hydrochloride) are distinct medications. They are sometimes confused because of similar branding or because they treat overlapping conditions, but they have different active ingredients and different safety profiles.

Which has fewer side effects, Flecainide Acetate Tablet or Sotalol Hydrochloride?

Side-effect frequency varies by individual. The side-effect comparison section on this page shows FAERS-reported events for each drug side by side. FAERS is voluntary reporting, so it reflects what patients and clinicians chose to report, not absolute population risk.

Can I switch from Flecainide Acetate Tablet to Sotalol Hydrochloride?

Switching medications should always be done under prescriber supervision. The "patient stories" section on this page includes accounts from people who have made the switch and what their transition felt like, but those are individual experiences, not protocols.

Flecainide Acetate Tablet vs Sotalol Hydrochloride

Compare Flecainide Acetate Tablet (Flecainide Acetate) and Sotalol Hydrochloride (Sotalol Hydrochloride), clinical data, side effects, and patient experiences.

Flecainide Acetate Tablet

Flecainide Acetate · Antiarrhythmic

How it works

Other agent

Approved for

INDICATIONS AND USAGE In patients without structural heart disease

Flecainide Acetate Tablets USP are indicated for the prevention of: • paroxysmal supraventricular tachycardias (PSVT)

including atrioventricular nodal reentrant tachycardia

such as sustained ventricular tachycardia ( sustained VT)

OralTablet

Sotalol Hydrochloride

Sotalol Hydrochloride · Antiarrhythmic

How it works

12.1 Mechanism of Action Sotalol has both beta-adrenoreceptor blocking (Vaughan Williams Class II) and cardiac action potential duration prolongation (Vaughan Williams Class III) a...

Approved for

life-threatening ventricular arrhythmias

reserve its use for patients in whom AFIB/AFL is highly symptomatic. Patients with paroxysmal AFIB that is easily reversed (by Valsalva maneuver

for example) should usually not be given sotalol hydrochloride tablets.

OralTablet

Quick Comparison

Flecainide Acetate TabletSotalol Hydrochloride

Drug Class

Antiarrhythmic

Route

Oral

Half-Life

N/A

FDA Approved

N/A

Pregnancy

N/A

Side Effect Frequency Comparison

Estimated frequency (%) based on clinical trial data

Side Effects

Flecainide Acetate Tablet

Fatigue

1-10%

Shortness of Breath

1-10%

Dizziness

1-10%

Nausea

1-10%

Drug Not Working

1-10%

Headache

1-10%

Diarrhea

1-10%

Weakness

1-10%

Sotalol Hydrochloride

Drug Not Working

1-10%

Shortness of Breath

1-10%

Fatigue

1-10%

Dizziness

1-10%

Diarrhea

1-10%

Nausea

1-10%

Weakness

1-10%

Low Blood Pressure

1-10%

FDA Warnings

Flecainide Acetate Tablet

An excessive mortality or non-fatal cardiac arrest rate was seen in patients treated with flecainide acetate compared with that seen in patients assigned to a carefully matched placebo-treated group
, those without recent myocardial infarction) is uncertain, but at present, it is prudent to consider the risks of Class IC agents (including flecainide acetate), coupled with the lack of any evidence of improved survival, generally unacceptable in patients without life-threatening ventricular arrhythmias, even if the patients are experiencing unpleasant, but not life-threatening, symptoms or signs
Case reports of ventricular proarrhythmic effects in patients treated with flecainide acetate for atrial fibrillation/flutter have included increased PVCs, VT, ventricular fibrillation (VF), and death
Concomitant negative chronotropic therapy such as digoxin or beta-blockers may lower the risk of this complication

Sotalol Hydrochloride

5 WARNINGS AND PRECAUTIONS QT prolongation, bradycardia, AV block, hypotension, worsening heart failure: Reduce dose or discontinue ( 5
1 QT Prolongation and Proarrhythmia Sotalol hydrochloride can cause serious and potentially fatal ventricular arrhythmias such as sustained VT/VF, primarily Torsade de Pointes (TdP) type ventricular tachycardia, a polymorphic ventricular tachycardia associated with QT interval prolongation
Factors such as reduced creatinine clearance, female sex, higher doses, reduced heart rate, and history of sustained VT/VF or heart failure increase the risk of TdP
The risk of TdP can be reduced by adjustment of the sotalol dose according to creatinine clearance and by monitoring the ECG for excessive increases in the QT interval [see Dosage and Administration ( 2

Clinical Trial Data

No head-to-head clinical studies found for Flecainide Acetate Tablet vs Sotalol Hydrochloride.

Flecainide Acetate Tablet vs Sotalol Hydrochloride: What You Should Know

Key Differences

Both Flecainide Acetate Tablet and Sotalol Hydrochloride belong to the Antiarrhythmic class. While they share a similar mechanism of action, differences in pharmacokinetics, dosing, and side effect profiles may make one more suitable than the other for individual patients.

Safety Considerations

Flecainide Acetate Tablet carries 4 FDA warnings. Sotalol Hydrochloride carries 4 FDA warnings. Patients should discuss all warnings and contraindications with their healthcare provider before starting or switching medications..

This comparison is for informational purposes only. Always consult a qualified healthcare professional before making medication decisions.

Related Comparisons

Flecainide Acetate vs Sotalol Hydrochloride→Dofetilide vs Sotalol Hydrochloride→Amiodarone Hydrochloride vs Sotalol Hydrochloride→Dronedarone vs Sotalol Hydrochloride→Flecainide Acetate vs Flecainide Acetate Tablet→Dofetilide vs Flecainide Acetate Tablet→

Primary sources

Every figure on this comparison links back to its primary source. See data sources and methodology for the full provenance trail.

Flecainide Acetate Tablet: DailyMed label · FAERS adverse events · ClinicalTrials.gov
Sotalol Hydrochloride: DailyMed label · FAERS adverse events · ClinicalTrials.gov

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Flecainide Acetate Tablet vs Sotalol Hydrochloride

Compare Flecainide Acetate Tablet (Flecainide Acetate) and Sotalol Hydrochloride (Sotalol Hydrochloride), clinical data, side effects, and patient experiences.

Flecainide Acetate Tablet

Flecainide Acetate · Antiarrhythmic

How it works

Other agent

Approved for

INDICATIONS AND USAGE In patients without structural heart disease

Flecainide Acetate Tablets USP are indicated for the prevention of: • paroxysmal supraventricular tachycardias (PSVT)

including atrioventricular nodal reentrant tachycardia

such as sustained ventricular tachycardia ( sustained VT)

OralTablet

Sotalol Hydrochloride

Sotalol Hydrochloride · Antiarrhythmic

How it works

12.1 Mechanism of Action Sotalol has both beta-adrenoreceptor blocking (Vaughan Williams Class II) and cardiac action potential duration prolongation (Vaughan Williams Class III) a...

Approved for

life-threatening ventricular arrhythmias

reserve its use for patients in whom AFIB/AFL is highly symptomatic. Patients with paroxysmal AFIB that is easily reversed (by Valsalva maneuver

for example) should usually not be given sotalol hydrochloride tablets.

OralTablet

Quick Comparison

Flecainide Acetate TabletSotalol Hydrochloride

Drug Class

Antiarrhythmic

Route

Oral

Half-Life

N/A

FDA Approved

N/A

Pregnancy

N/A

Side Effect Frequency Comparison

Estimated frequency (%) based on clinical trial data

Side Effects

Flecainide Acetate Tablet

Fatigue

1-10%

Shortness of Breath

1-10%

Dizziness

1-10%

Nausea

1-10%

Drug Not Working

1-10%

Headache

1-10%

Diarrhea

1-10%

Weakness

1-10%

Sotalol Hydrochloride

Drug Not Working

1-10%

Shortness of Breath

1-10%

Fatigue

1-10%

Dizziness

1-10%

Diarrhea

1-10%

Nausea

1-10%

Weakness

1-10%

Low Blood Pressure

1-10%

FDA Warnings

Flecainide Acetate Tablet

An excessive mortality or non-fatal cardiac arrest rate was seen in patients treated with flecainide acetate compared with that seen in patients assigned to a carefully matched placebo-treated group
, those without recent myocardial infarction) is uncertain, but at present, it is prudent to consider the risks of Class IC agents (including flecainide acetate), coupled with the lack of any evidence of improved survival, generally unacceptable in patients without life-threatening ventricular arrhythmias, even if the patients are experiencing unpleasant, but not life-threatening, symptoms or signs
Case reports of ventricular proarrhythmic effects in patients treated with flecainide acetate for atrial fibrillation/flutter have included increased PVCs, VT, ventricular fibrillation (VF), and death
Concomitant negative chronotropic therapy such as digoxin or beta-blockers may lower the risk of this complication

Sotalol Hydrochloride

5 WARNINGS AND PRECAUTIONS QT prolongation, bradycardia, AV block, hypotension, worsening heart failure: Reduce dose or discontinue ( 5
1 QT Prolongation and Proarrhythmia Sotalol hydrochloride can cause serious and potentially fatal ventricular arrhythmias such as sustained VT/VF, primarily Torsade de Pointes (TdP) type ventricular tachycardia, a polymorphic ventricular tachycardia associated with QT interval prolongation
Factors such as reduced creatinine clearance, female sex, higher doses, reduced heart rate, and history of sustained VT/VF or heart failure increase the risk of TdP
The risk of TdP can be reduced by adjustment of the sotalol dose according to creatinine clearance and by monitoring the ECG for excessive increases in the QT interval [see Dosage and Administration ( 2

Clinical Trial Data

No head-to-head clinical studies found for Flecainide Acetate Tablet vs Sotalol Hydrochloride.

Flecainide Acetate Tablet vs Sotalol Hydrochloride: What You Should Know

Key Differences

Safety Considerations

This comparison is for informational purposes only. Always consult a qualified healthcare professional before making medication decisions.

Primary sources

Every figure on this comparison links back to its primary source. See data sources and methodology for the full provenance trail.

Flecainide Acetate Tablet: DailyMed label · FAERS adverse events · ClinicalTrials.gov
Sotalol Hydrochloride: DailyMed label · FAERS adverse events · ClinicalTrials.gov