If your cat shows any of these signs, start today.
Abdominal swelling
Distended belly or fluid buildup — a hallmark of the “wet” form of FIP.
Eye inflammation
Cloudiness, color changes, or visible inflammation in one or both eyes.
Persistent fever
39.5–41 °C lasting more than 24 hours, often unresponsive to common antibiotics.
Loss of appetite
Skipping meals, sudden weight loss, no interest in favorite food or treats.
Lethargy or weakness
Sleeping much more than usual, hiding, reluctance to jump or play.
Positive FCoV test
A confirmed mutation result on PCR or rivalta — if you have one to share with us.
You know when something is wrong.Most owners we treat tell us they knew, days before the diagnosis, that something was different. If you're reading this page, that probably includes you.Every day of FIP without treatment is a day the virus advances. If your cat has been sick for more than 24 hours and shows two or more of the symptoms below, request a consultation now.
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84 Day Process
DAY 0 · CONSULT
Free veterinary review
Upload symptoms, bloodwork, and any imaging. A licensed EU vet reviews your case within 24 hours and confirms the right dose for your cat’s weight and form.
DAY 1–14 · STABILIZE
Discreet shipping. First dose.
Verified GS-441524 ships in temperature-controlled packaging within 48 hours. Daily check-ins by text. Most cats stop showing acute symptoms within the first week.
DAY 15–63 · STEADY
Quiet rhythm.
One dose, every morning. Weekly weight, monthly bloodwork. Your vet adjusts dosing as your cat grows back into themselves.
DAY 64–84 · OFF-TREATMENT
Recovery and follow-up.
Treatment ends at day 84. We schedule a final review, check for relapse signals, and stay on call for the 12-week post-treatment observation window.
Today is day zero.
Let’s plan day one.
• FREE · NO OBLIGATION · VET RESPONSE < 24 H · EU-LICENSED CLINICIANS · DISCREET SHIPPING