Cats

Cat Infectious Peritonitis Antiviral Treatment

Feline infectious peritonitis (FIP) was once invariably fatal. Antiviral drugs including GS-441524 now offer genuine cure rates above 85%, transforming the welfare outlook for affected cats.

Key Facts

FIP is caused by a mutated feline coronavirus affecting macrophages and causing systemic inflammation
Wet FIP causes fluid accumulation in body cavities while dry FIP causes granulomatous lesions
GS-441524 and other nucleoside analogues achieve cure rates exceeding 85% in treated cats
Treatment requires 12 weeks of daily injections or oral medication followed by monitoring
Regulatory approval varies by country but veterinary access to antivirals has expanded significantly

Welfare Considerations

FIP causes progressive debilitating illness including abdominal distension, neurological signs, fever and weight loss. Prior to antiviral availability, FIP diagnosis was a death sentence with euthanasia as the only welfare option. Effective treatment now means most cats recover to normal health and life expectancy. Access to antivirals should be a priority for all FIP-diagnosed cats.

What You Can Do

Seek specialist veterinary advice immediately if a cat is diagnosed with FIP
Ask about antiviral treatment availability and explore legitimate access pathways
Support organizations advocating for regulatory approval of FIP antivirals globally
Monitor cats with coronavirus antibodies for early FIP signs allowing prompt treatment
Donate to FIP research and advocacy organizations working to improve treatment access