Disclaimer: This article provides general guidance on FIP in cats in Malaysia as of March 2026. Treatment options and availability may change. Always consult a licensed veterinarian for diagnosis and treatment of your cat.
Your vet just said those three letters no cat owner wants to hear: FIP. Feline Infectious Peritonitis used to be a guaranteed death sentence. But treatment options have improved, and survival rates are rising, even in Malaysia.
This guide covers everything Malaysian cat owners need to know about FIP: what it is, the symptoms to watch for, how vets diagnose it, treatment options including GS-441524, costs in Malaysia, and what pet insurance does and doesn't cover.
Here's what we'll cover:
- What FIP is and how cats get it
- Wet FIP vs dry FIP symptoms
- Diagnosis methods
- Treatment options (including GS-441524)
- Treatment costs in Malaysia
- What insurance covers (and what it doesn't)
- FAQ
What Is FIP?
Feline Infectious Peritonitis (FIP) develops when feline coronavirus (FCoV) mutates inside a cat's body. Feline coronavirus itself is extremely common, especially in multi-cat environments. Most cats who carry it show mild symptoms at most, like occasional diarrhoea.
But in roughly 5-10% of infected cats, the virus mutates into the FIP-causing strain. This triggers a severe inflammatory response that attacks tissues in the abdomen, kidneys and brain.
| Fact | Detail |
|---|---|
| Cause | Mutation of feline coronavirus (FCoV) inside the cat's body |
| Contagious? | FCoV itself is contagious (through faeces, saliva). The FIP mutation is not directly transmissible between cats |
| Risk of FCoV → FIP | 5-10% of FCoV-positive cats develop FIP |
| Affects humans? | No. Feline coronavirus does not infect humans |
| Higher risk cats | Kittens under 2 years, cats in shelters/catteries, purebreds |
How Cats Get FIP
Cats get infected with feline coronavirus through contact with faeces, saliva or shared items (litter trays, food bowls, toys) from other FCoV-positive cats. Environments with multiple cats have higher infection rates.
The FIP mutation happens inside the individual cat's body. Stress, genetics and a weakened immune system may increase the chance of mutation. This is why kittens, cats in shelters, and cats who have recently been rehomed are at higher risk.
FIP Symptoms: Wet vs Dry
FIP presents in two forms. Some cats show symptoms of both.
Early Symptoms (Both Forms)
| Early Symptom | What to Look For |
|---|---|
| Persistent fever | Doesn't respond to antibiotics |
| Loss of appetite | Gradually eats less and less |
| Weight loss | Loses weight despite eating |
| Lethargy | Less active, sleeping more than usual |
Wet FIP (Effusive)
Wet FIP is the more common and faster-progressing form. Fluid builds up in the abdomen or chest.
| Symptom | Description |
|---|---|
| Swollen/bloated belly | Fluid accumulation in the abdomen, feels firm |
| Difficulty breathing | Fluid in the chest cavity compresses the lungs |
| Jaundice | Yellowing of gums, eyes and ears |
Dry FIP (Non-Effusive)
Dry FIP progresses more slowly and is harder to diagnose. It causes nodules/granulomas in organs.
| Symptom | Organ Affected |
|---|---|
| Seizures, wobbliness, loss of coordination | Brain/nervous system |
| Increased thirst and urination | Kidneys |
| Jaundice, vomiting | Liver |
| Eye inflammation (uveitis) | Eyes |
How Vets Diagnose FIP
FIP is one of the hardest diseases to definitively diagnose. No single test confirms it. Vets use a combination of:
| Test/Method | What It Shows | Cost (RM) |
|---|---|---|
| Blood test (CBC + biochemistry) | High protein, low albumin, abnormal white blood cells | RM150-300 |
| FCoV antibody titre | Confirms coronavirus exposure (not FIP-specific) | RM80-150 |
| Fluid analysis (wet FIP) | Sticky, yellow, high-protein fluid from abdomen/chest | RM100-200 |
| Ultrasound | Shows fluid accumulation or organ nodules | RM150-350 |
| PCR test | Detects coronavirus genetic material in fluid/tissue | RM200-400 |
| Immunohistochemistry (biopsy) | Most definitive test, detects virus in tissue | RM300-500+ |
Most vets diagnose FIP based on a combination of clinical signs, blood work and fluid analysis. A definitive diagnosis often requires tissue biopsy, which isn't always practical for a sick cat.
Treatment Options for FIP in Malaysia
This is where things get complicated. Until recently, FIP was considered untreatable. That's changing, but the situation in Malaysia is nuanced.
GS-441524 (Antiviral Treatment)
GS-441524 is an antiviral compound that has shown remarkable success in treating FIP, with reported cure rates of 80-90% in clinical studies. Many cat owners in Malaysia have used it with positive results.
| GS-441524 Detail | Info |
|---|---|
| What it is | Antiviral nucleoside analogue that inhibits FIP virus replication |
| Treatment duration | Typically 84 days (12 weeks) of daily injections or oral pills |
| Reported success rate | 80-90% in clinical studies |
| Regulatory status in Malaysia | Not officially approved as a veterinary medicine |
| Availability | Available through online sellers and some vets. Quality varies |
The catch: Because GS-441524 is not officially approved, most vets cannot formally prescribe it or include it on vet bills. Some vets will guide you on dosing and monitor your cat's progress while you source the drug yourself.
Supportive Care
Alongside or instead of GS-441524, vets provide supportive treatment:
- Anti-inflammatory medication to reduce inflammation and fever
- Fluid drainage for wet FIP (removes accumulated fluid from abdomen/chest)
- Appetite stimulants and nutritional support
- Antibiotics for secondary infections
- Pain management to keep your cat comfortable
FIP Treatment Costs in Malaysia
| Treatment Component | Estimated Cost (RM) | Notes |
|---|---|---|
| Diagnosis (blood + ultrasound + fluid) | RM500-1,000 | Multiple tests usually needed |
| GS-441524 (84-day course) | RM2,000-8,000 | Depends on cat's weight, form (injection/oral), and source. Dry/neurological FIP costs more |
| Supportive care (fluid drainage, meds) | RM500-2,000 | Multiple vet visits over treatment period |
| Follow-up blood tests (during treatment) | RM300-600 | Monthly blood work to monitor progress |
| Total estimated cost | RM3,300-11,600 | Varies widely by severity and treatment approach |
FIP treatment is expensive. The GS-441524 drug alone can cost thousands of ringgit for a full 84-day course, and the price depends on your cat's weight and whether you're using injections or oral pills.
Prevention: Can You Stop FIP?
There's no guaranteed way to prevent FIP, but you can reduce the risk:
| Prevention Step | Why It Helps |
|---|---|
| Keep litter boxes clean and away from food | FCoV spreads through faeces |
| One litter box per cat plus one extra | Reduces faecal contamination |
| Minimise stress (especially for kittens) | Stress weakens immunity and may trigger mutation |
| Avoid overcrowding cats | Multi-cat households have higher FCoV infection rates |
| Keep up-to-date on core vaccinations | Strong immune system may lower mutation risk |
A FIP vaccine exists but its effectiveness is widely questioned. It is not part of the core vaccination schedule in Malaysia.
What Does Pet Insurance Cover for FIP?
This is an important nuance that many cat owners don't know:
| FIP-Related Treatment | Covered by Oyen? | Why |
|---|---|---|
| GS-441524 | Not covered | Not an approved veterinary medicine; cannot appear on official vet bills |
| Diagnostic tests (blood work, ultrasound, fluid analysis) | Generally covered | Standard diagnostic procedures on official vet bills, subject to review |
| Supportive care (fluids, antibiotics, anti-inflammatories) | Generally covered | Standard veterinary treatments on official vet bills, subject to review |
| Hospitalisation | Generally covered | Overnight stays at the vet clinic, subject to review |
| Fluid drainage procedures | Generally covered | Therapeutic procedures performed by a vet, subject to review |
| Supplements (probiotics, appetite stimulants) | Not covered | Supplements are excluded from all plans |
So while GS-441524 itself isn't covered, a significant portion of FIP-related vet costs (diagnosis, supportive care, hospitalisation, procedures) may be covered under Oyen. This can help offset thousands of ringgit in vet bills during a very stressful time.
For the full list of what's covered and excluded, check the exclusions list.
FAQ
Is FIP in cats contagious?
The underlying feline coronavirus (FCoV) is contagious and spreads through faeces and saliva. But the FIP mutation itself happens inside individual cats and is not directly transmissible. So while cats can spread FCoV to each other, they can't directly spread FIP. Only a small percentage (5-10%) of FCoV-positive cats develop the FIP mutation.
Can FIP in cats be cured?
GS-441524 has shown cure rates of 80-90% in clinical studies, and many Malaysian cat owners have reported successful treatment. Treatment requires a full 84-day course of daily injections or oral pills. But GS-441524 is not officially approved as a veterinary medicine in Malaysia, so access and quality control remain challenges. Talk to your vet about your options.
How much does FIP treatment cost in Malaysia?
Total costs typically range from RM3,300 to RM11,600 depending on severity and treatment approach. The GS-441524 drug alone costs RM2,000 to RM8,000 for a full course. Diagnosis (blood work, ultrasound, fluid analysis) adds RM500 to RM1,000. Supportive vet care throughout treatment adds RM500 to RM2,000. Dry or neurological FIP generally costs more to treat.
Can my cat get FIP even if it's an indoor cat?
Yes. Most cats contract feline coronavirus as kittens from their mother or from other cats at the breeder or shelter before you adopt them. The virus can stay dormant for months or years before mutating into FIP. So even a cat that has been strictly indoor its entire life with you can develop FIP from a coronavirus infection it picked up much earlier.
Does pet insurance cover FIP treatment in Malaysia?
Partially. GS-441524 is not covered because it's not an officially approved medicine and cannot be prescribed on a vet bill. But diagnostic tests, supportive care (antibiotics, anti-inflammatories), hospitalisation and procedures like fluid drainage are generally covered under Oyen, subject to review by the claims team. This can cover a significant portion of the total bill. Check the full exclusions list for details.
Is there a vaccine for FIP?
A FIP vaccine exists but its effectiveness is widely questioned by veterinary experts. It is not listed as a core vaccine in Malaysia and most vets do not routinely recommend it. The best prevention is good hygiene in multi-cat households: clean litter boxes frequently, avoid overcrowding, and minimise stress for your cats.
Protecting Your Cat Starts Here
FIP is one of the most feared diagnoses for cat owners. Treatment has come a long way, but it's expensive. While GS-441524 isn't covered by insurance, the diagnostic tests, supportive care and hospitalisation that accompany FIP treatment generally are.
Having insurance in place before your cat gets sick means you're not starting from zero when a RM5,000+ vet bill hits. Oyen cat insurance covers 1,000+ conditions at any licensed vet clinic in Malaysia, with coverage up to RM10,000/year.
Check your cat's eligibility now — it takes less than 2 minutes.
