Calculator

FIP treatment dosage calculator

See how a GS-441524 dose scales with your cat’s weight and the form of FIP. This is an educational estimate to bring to your veterinarian — never a prescription, and never a substitute for a diagnosis.

Cat’s weight (kg)FIP form

Fluid in abdomen or chest. Commonly referenced range for this form: 6–8 mg/kg of GS-441524, once daily.

Estimated daily GS-441524 dose

Enter a weight to estimate.

Injectable volume (optional) — needs a verified concentration

Product concentration (mg/mL)

Independent testing has found unlicensed products containing very different amounts of drug than their labels claim. A label figure can be wrong — treat any volume here as unreliable unless the concentration is verified.

This is an educational estimate, not a prescription. The ranges shown are commonly referenced starting points, not a dose for your cat. Real dosing depends on diagnosis, severity, response, and bloodwork over time, and under-dosing risks treatment failure and resistance. Set the actual dose with a veterinarian who has examined your cat.

Not sure what dose is right? Ask a vet.

A calculator can show how a dose scales, but the real number depends on your cat's diagnosis and response. Message us on WhatsApp and a veterinarian will help — no sales pitch.

Ask on WhatsApp

A conversation, not a prescription. Anything for your pet still goes through a veterinarian who has examined them.