Acyclovir is an antiviral medication used to treat viral infections such as herpes simplex virus (HSV), varicella-zoster virus (VZV), and Epstein-Barr virus (EBV) [2]. According to Drug Patent Watch [1], acyclovir is the generic name for several brand-name drugs, including Zovirax, Sitavig, and Xerese.

WebMD [2] notes that acyclovir may interact with other medications, including other antiviral drugs, as well as drugs that affect the kidneys, such as nonsteroidal anti-inflammatory drugs (NSAIDs) and certain antibiotics. This is because acyclovir is primarily eliminated from the body through the kidneys.

RxList [3] provides a list of medications that may interact with acyclovir. This includes other antiviral medications, such as valacyclovir and famciclovir, as well as drugs that affect kidney function, such as aminoglycoside antibiotics and cyclosporine. RxList also notes that acyclovir may interact with probenecid, a medication used to treat gout, which can increase the levels of acyclovir in the blood.

In conclusion, acyclovir may interact with other antiviral medications, as well as drugs that affect kidney function. It is important to inform your healthcare provider of all medications you are taking before starting acyclovir to avoid potential interactions [2].

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/ACYCLOVIR
[2] https://www.webmd.com/drugs/2/drug-941/acyclovir-oral/details
[3] https://www.rxlist.com/acyclovir/generic-drug.htm