Studies show it speeds up recovery from upper respiratory disease.

It works by stopping the herpes virus from replicating. By inhibiting viral reproduction, it allows your cat’s immune system to reduce the severity and duration of flare-ups. Why Choose Famciclovir?

Note: Famciclovir does not kill the virus permanently; it manages symptoms and reduces flare-ups. Dosage and Administration

Effects of famciclovir in cats with spontaneous acute upper ... - PMC

Famciclovir for Cats: How to Treat Feline Herpesvirus (FHV-1)

One of the most effective tools in a veterinarian’s arsenal to combat this virus is .

Famciclovir is an originally developed for humans to treat herpes zoster (shingles) and cold sores. However, veterinary studies have found it to be a highly effective and safe off-label treatment for FHV-1 in cats.

It reduces viral shedding and clinical signs.