Chicken Pox Medication Side Effects
Chicken pox (varicella-zoster virus) can be treated with antiviral medications to reduce the symptoms of the disease. These antivirals must be taken within 24 hours of symptoms appearing. Because of their side effects, they are not recommended for people who are not at risk for complications.
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Types
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Antiviral drugs for chicken pox include acyclovir (Zovirax), famciclovir (Famvir), foscarnet (Foscavir), penciclovir (Denavir) and valacyclovir hydrochloride (Valtrex).
Methods
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Antiviral drugs can be administered through injection, pill or topical cream. Side effects depend on the drug and the method of use.
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Common Side Effects
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Famciclovir may cause digestive problems such as diarrhea and nausea, and famciclovir and penciclovir may cause headache. Valacyclovir may cause mood symptoms such as irritability and trouble concentrating. Foscarnet may cause thirst and changes in urination.
Less Common Side Effects
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Acyclovir and famciclovir may cause digestive problems such as vomiting, and famciclovir may cause hallucinations or mood disruptions. Penciclovir and famciclovir may cause rash or skin irritation.
Rare Side Effects
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Valacyclovir and acyclovir may cause black, tarry stools, chills or fever. Foscarnet may cause sores to appear on the genitals.
Medical Help
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This is not a comprehensive list of side effects. Most side effects are mild and will go away on their own, but you should talk to your doctor if you experience severe or persistent side effects.
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