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Propafenone Side Effects

Fever, unusual bleeding, and vision problems are some of the side effects of propafenone that require immediate medical treatment. Fortunately, most reactions to this medication are generally minor and easy to treat. Clinical studies have shown that some of the most commonly reported problems with this drug include an unusual taste, fatigue, and diarrhea.

An Introduction to Side Effects of Propafenone

Just like any medicine, propafenone (Rythmol®) can cause side effects. However, not everyone who takes the medication will have problems. In fact, most people tolerate it quite well. If side effects do occur, in most cases, they are minor and either require no treatment or are treated easily by you or your healthcare provider.
(This article covers many, but not all, of the possible side effects with propafenone. Your healthcare provider can discuss a more complete list with you.)

Serious Propafenone Side Effects

Some side effects of propafenone are potentially serious and should be reported immediately to your healthcare provider. These include but are not limited to:
  • Signs of an allergic reaction, such as:
    • An unexplained rash
    • Hives
    • Itching
    • Unexplained swelling, especially of the mouth, lips, or throat
    • Wheezing
    • Difficulty breathing or swallowing
  • Signs of liver problems, such as:
    • Yellowing of the skin or whites of the eyes (jaundice)
    • Dark urine
    • Pain in the upper-right area of the abdomen (stomach)
  • Unusual bleeding or bruising
  • Signs of infection, such as:
  • A new or worsening irregular heartbeat
  • A slow, fast, or forcefully beating heart
  • Feeling faint or dizzy
  • Swelling of the arms, hands, legs, ankles, or feet
  • Unexplained weight gain
  • Shortness of breath or difficulty breathing
  • Chest pain
  • Severe or persistent diarrhea, vomiting, or sweating
  • Hearing problems
  • Vision problems, such as blurred vision
  • A change in the amount you normally urinate.
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Propafenone Drug Information

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