Antiviral Medications:
What is it?

Antiviral Medications:
How is it Used?


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Antiviral Medications Side Effects and Warnings

Side Effects and Warnings

Side effects of prescription antiviral medicines for cold sores are rare, but may include:

  • Allergic reaction (rash, swelling of the face, difficulty breathing)
  • Decreased urine production
  • Unusual bleeding or bruising
  • Upset stomach, decreased appetite
  • Headache
  • Local numbness or tingling in area of application

Possible side effects of docosanol (Abreva) include:

  • Headaches
  • Allergic reaction (rash, swelling of the face, difficulty breathing)

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