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An immunocompromised patient with herpes zoster is administered a high dose of intravenous acyclovir. Which of the following, if reported or observed, would be an adverse effect of the drug?

Explanation

•High doses of acyclovir can cause hallucinations, a less common adverse reaction to the drug.

•Common side effects of acyclovir include malaise, rash, nausea, vomiting, headache, and diarrhea.

•Arrhythmias, ototoxicity, and tinnitus are not commonly associated with acyclovir.

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