Compare Rythmol vs. Betapace

Head-to-head comparisons of medication uses, side effects, ratings, and more.

Treats certain types of abnormal heartbeats.

Rythmol (propafenone) is very effective at normalizing your heartbeat, but cannot be used if you have a history of certain heart conditions.

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  • Rythmol (propafenone) effectively treats certain types of irregular heartbeats.
  • The extended-release pill can be take 2 times a day.
  • Available as a cheaper generic.
No information currently available
  • Rythmol (propafenone) can affect certain lab tests so you will need to get your blood checked regularly.
  • Can lower sperm counts in men, but is reversible with short-term therapy.
  • There is no evidence that supports Rythmol (propafenone) keeps you alive longer.
No information currently available
Used for
  • Atrial arrhythmia Ventricular arrhythmia
  • Life threatening
  • Angina pectoris
  • Chronic Hypertension
Dosage forms
  • Pill
  • Extended-release pill
  • Pill
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Side effects
The Rythmol (propafenone) FDA package insert doesn’t have numbers about how common side effects are.
The Betapace (Sotalol) FDA package insert doesn’t have numbers about how common side effects are.
Risks and risk factors
  • Increased risk of death
    • Heart attack in the past 2 years
    • History of heart failure
    • Structural heart disease
  • Drug interactions
    • Medicines for depression
    • Medicines for infections
    • Grapefruit juice
    • Other heart medicines
  • Low white blood cells
    • History of low white blood cells
  • Low sperm count
  • Liver and/or kidney problems
    • Liver problems
    • Kidney problems
See more detailed risks and warnings
No information currently available