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Acyclovir is an antiviral medication used to treat infections caused by certain types of viruses. It is most commonly used to treat herpes simplex virus (HSV) infections, including cold sores, shingles, and chickenpox. It can also be used to treat other viral infections, such as Epstein-Barr virus, cytomegalovirus, and varicella-zoster virus.

Common side effects of acyclovir include nausea, vomiting, diarrhea, headache, and dizziness. Other side effects may include fever, chills, muscle aches, and joint pain.

Brand names associated with acyclovir include Zovirax, Sitavig, Valtrex, and Famvir.

  • acyclovir
  • anti-infective
  • antiviral
  • nucleoside

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