Feline infectious peritonitis, once considered uniformly fatal, is now treatable with antiviral drugs that offer high remission rates.
The development of effective FIP treatment represents one of the most significant recent advances in feline medicine. Cats that would have been euthanized within days or weeks now recover to lead normal lives. Access to treatment remains a welfare challenge — drugs are expensive, and compounded versions vary in quality. Welfare advocacy includes supporting expanded access, clear prescribing guidelines, and owner education about realistic treatment expectations and monitoring requirements.