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Famvir (famciclovir) is used for treating herpes zoster infection (shingles). It is also used to treat recurring herpes skin infections in patients who also have HIV infection. Famvir is used in patients who have a weakened immune system to treat recurring cold sores and to treat or suppress recurring genital herpes.
The most frequent adverse reactions reported during herpes zoster clinical trials with oral famciclovir 3 times daily were: constipation, diarrhea, dizziness, fatigue, fever, headache, nausea, vomiting.
During clinical practice, confusion (including delirium, disorientation, confusional state) has been reported. While infrequent, most of these spontaneous reports have occurred in the elderly.
Famvir allergic reactions: rash, hives, itching, difficulty breathing, tightness in the chest; swelling of the mouth, face, lips, or tongue, change in the amount of urine produced, confusion, delirium, disorientation, hallucinations, red, swollen, blistered, or peeling skin.
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