Companion Animals

Cat Feline Infectious Peritonitis - Antiviral Progress

FIP was once considered a fatal diagnosis, but antiviral drugs including GS-441524 have transformed outcomes for thousands of cats with this disease.

Key Facts

FIP is caused by a mutated form of feline coronavirus and was historically nearly 100% fatal
GS-441524 and Remdesivir-related compounds achieve remission in 80-90% of treated cats
Treatment requires 84+ days of daily injection or oral dosing
Neurological and ocular forms of FIP respond but require higher doses and longer treatment
Licensed veterinary formulations are now available, replacing the need for unlicensed imports

Welfare Considerations

FIP treatment represents one of the most dramatic veterinary welfare advances of the 2020s, transforming a death sentence into a manageable and often curable condition.

What You Can Do

Seek specialist advice immediately if your cat is diagnosed with FIP
Ask your vet about licensed GS-441524 formulations and treatment protocols
Support research into FIP vaccine development for prevention