Rythmol

(propafenone)

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Treats certain types of abnormal heartbeats.

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Our bottom line

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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Quick facts about Rythmol
  • Drug class: Cardiovascular
  • Rx status: Prescription only
  • Generic status: Lower-cost generic available (propafenone)

Upsides

  • 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.
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What to expect from Rythmol, on one page

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Downsides

  • 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.
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What to expect from Rythmol, on one page

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How it works

Rythmol (propafenone) is an antiarrhythmic. It stabilizes and slows the conduction of your heart muscles to normalize your heartbeat.

Quick facts about Rythmol
  • Drug class: Cardiovascular
  • Rx status: Prescription only
  • Generic status: Lower-cost generic available (propafenone)

Used for

Dosage forms

  • Pill
  • Extended-release pill
Tried Rythmol? Write a review!

Prices and coupons

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What to expect when you take Rythmol (propafenone) for Ventricular arrhythmia

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  • Effectiveness
  • Starts to kick in
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  • Possible side effects
  • Unusual taste
  • Nausea and/or vomiting
  • Dizziness
  • Constipation
  • Headache
  • Fatigue
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Side effect rates for Rythmol (propafenone)

From 523 clinical trials of Rythmol when taken for atrial arrhythmia (225 mg or 325 mg or 425 mg rythmol sr twice daily)

Risks and Warnings for Rythmol (propafenone)

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    • Higher risk if:
    • › Heart attack in the past 2 years
    • › History of heart failure
    • › Structural heart disease

    Rythmol (propafenone) is only to be used to treat life-threatening abnormal atrial beats. It can lead to an increased risk of death in people who've had a heart attack. It can also cause new or worsened arrhythmias or heart failure, which can be fatal. Rythmol (propafenone) hasn't demonstrated that it prolongs survival in people who take it. For these reasons, it should only be used when no other options are available.

    This is a black box warning. The FDA requires this warning when there is a significant risk of serious or life-threatening effects that anyone taking the drug should consider.

Means that some groups have a high risk of experiencing this side effect

Common concerns from people taking Rythmol (propafenone)

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  • Rythmol (propafenone) can lower sperm counts in men. Using Rythmol (propafenone) for a short period of time has shown a reversible and short-term drop in sperm count. Talk to your doctor if this is a concern for you.
Kidneys and liver
  • Rythmol (propafenone) should be used with caution in people with liver or kidney disease since it may lead to an increased risk of side effects or heart complications. Let your doctor know if you have a history of liver or kidney problems.