FIP Treatment Cost in the Philippines: 84-Day Budget Guide
Key takeaway: The cost of Feline Infectious Peritonitis (FIP) treatment in the Philippines depends on four things: your cat's weight, the FIP form, the treatment route you choose with your veterinarian, and how long the course runs (the standard protocol is 84 days, or 12 weeks). There is no single fixed price, because a heavier cat and a higher-dose form need more medicine. The best way to get an accurate number is to weigh your cat, confirm the diagnosis with your veterinarian, and ask our team for a current quote for your cat's exact weight band.
If you are reading this, you are likely staring at a scary diagnosis and an even scarier question about money. Take a breath. You are not the first Pawrent to face this, and your cat's recovery journey has a clear path forward. Since 2019, our network has helped Pawrents treat, save and support more than 100,000 cats, and that includes cats treated with GS-441524. Let us walk through the budget honestly, step by step.
How much does Feline Infectious Peritonitis (FIP) treatment cost in the Philippines?
Feline Infectious Peritonitis (FIP) treatment cost in the Philippines is driven by your cat's body weight, the FIP form, your chosen treatment route, and the length of the course. Because dosing is calculated per kilogram or per weight class, a 2 kg kitten and a 6 kg adult will not cost the same. We do not publish a flat peso figure in this guide, because an honest number only exists once your cat is weighed and diagnosed.
What we can give you is the full structure of the budget, so there are no surprises. Once you know your cat's weight and FIP form, our team can share current pricing for your exact weight band, and your veterinarian can confirm the plan. If you want the bigger picture on the disease first, our complete FIP guide for Filipino caregivers is a good place to start.
What determines the cost of Feline Infectious Peritonitis (FIP) treatment?
The cost of Feline Infectious Peritonitis (FIP) treatment comes down to a handful of clear factors. Understanding them helps you plan and avoid the biggest hidden expense of all, which is under-dosing that drags the treatment out longer.
Here are the main cost drivers:
Your cat's weight. Medicine is dosed per kilogram (injectable) or per weight class (capsules), so a heavier cat needs more.
The FIP form. FIP has four forms: wet (effusive), dry (non-effusive), ocular, and neurological. The injectable dose rises with the form, so higher-dose forms use more medicine.
The treatment route. Injectable GS-441524, oral FipX (EIDD-1931), and the dual capsule (GS-441524 + EIDD-1931) are costed differently.
Course length. The standard protocol is 84 days (12 weeks). Chronic or severe cases may run longer on veterinary advice.
Diagnostics and monitoring. Vet consults, bloodwork and imaging to confirm FIP and track progress.
Supportive care. Adjunct organ support and other items your veterinarian may recommend.
How does my cat's weight change Feline Infectious Peritonitis (FIP) treatment cost?
Your cat's weight is the single biggest variable in Feline Infectious Peritonitis (FIP) treatment cost, because every dose is tied to it. With the injectable, the daily amount is calculated in mg per kg, so heavier cats use more medicine each day across the 84-day course.
With the oral options, dosing is set by weight band instead. The dual capsule is the simplest to budget for, because it is one capsule a day chosen by your cat's weight class, with no mg calculation and no counting capsules.
Weight class | Dual capsule (GS-441524 + EIDD-1931) dose |
0 to 2.5 kg (0 to 5.5 lb) | 1 capsule per day |
2.5 to 5 kg (5.5 to 11 lb) | 1 capsule per day |
over 5 kg (over 11 lb) | 1 capsule per day |
For FipX (the EIDD-1931 15 mg capsule), dosing is by weight every 12 hours, so capsule use rises with size:
Weight | FipX (EIDD-1931) capsules every 12 hours |
under 2.5 kg (under 5.5 lb) | 1 |
2.5 to 5 kg (5.5 to 11 lb) | 2 |
over 5 kg (over 11 lb) | 3 |
The key point is correct dosing for your cat's condition and weight. Chronic under-dosing only prolongs treatment and raises the total cost, so getting the dose right from day one is the budget-friendly choice.
What are the treatment routes for Feline Infectious Peritonitis (FIP), and how do costs differ?
There are three main treatment routes for Feline Infectious Peritonitis (FIP), and the common practice is to combine them. Most Pawrents start with GS-441524 injections at the standard dose, then after 2 to 4 weeks switch to oral capsules, either FipX (EIDD-1931) or the dual capsule. This applies to ocular and neurological cases too.
Route | What it is | Dosing | Course |
GS-441524 subcutaneous injectable | Daily injection under the skin (40 mg/ml, 99.4% purity, 8 ml vial) | By FIP form: wet 6 mg/kg, dry 8 mg/kg, ocular 10 mg/kg, neurological 10 mg/kg; 1 injection per day, 7 days a week | 12 weeks (84 days) |
FipX (EIDD-1931) capsule | Oral capsule, 15 mg each, 60 per bottle | By weight every 12 hours (see table above) | Standard 60 days; chronic or severe cases may run up to 90 days or longer |
Dual capsule (GS-441524 + EIDD-1931) | Oral capsule, one pill per weight class | 1 capsule per day by weight class | 12 weeks |
There is also a BasmiFIP alternative for wet or dry FIP without ocular or neurological signs: you may start EIDD-1931 for 30 days, extend if symptoms persist, and if they continue past 60 days, switch to GS-441524 injections at the standard dose for the form. Your veterinarian will help you pick the route that fits both your cat and your budget.
The injectable dose depends on the FIP form, so this table shows how the daily amount is set:
FIP form | GS-441524 injectable dose |
Wet (effusive) | 6 mg/kg |
Dry (non-effusive) | 8 mg/kg |
Ocular | 10 mg/kg |
Neurological | 10 mg/kg |
FIP is caused by a mutated form of the common feline coronavirus (FCoV), which makes it very different from other feline viruses such as Feline Calicivirus (FCV) or Feline Herpesvirus (FHV-1). Those conditions use different products, so do not budget for them under an FIP plan.
What does the 84-day Feline Infectious Peritonitis (FIP) protocol look like?
The 84-day Feline Infectious Peritonitis (FIP) protocol is a 12-week course, and planning your budget around the full length keeps you from running short mid-treatment. A common, practical path looks like this:
Confirm the diagnosis. Your veterinarian examines your cat, runs bloodwork, and identifies the FIP form (wet, dry, ocular, or neurological).
Start GS-441524 injections. One subcutaneous injection per day at the standard dose for the form, 7 days a week.
Switch to oral after 2 to 4 weeks. Move to FipX (EIDD-1931) or the dual capsule once your cat is stable, including ocular and neurological cases.
Finish the full course. Complete the 12 weeks (84 days), then follow your veterinarian's advice on monitoring and observation.
Watch for remission. Your veterinarian confirms when your cat has reached remission.
The results give real reason for hope. In Pedersen et al. 2019 (J Feline Med Surg 21(4):271-281), injectable GS-441524 reached a 92% success rate, meaning 24 of the 26 cats that completed treatment stayed healthy; put simply, more than 9 out of 10 cats that completed injectable GS-441524 treatment stayed healthy. For the dual antiviral GS-441524 + EIDD-1931, our own data from about 46 treated cats show a 78.3% remission rate, or about 8 out of 10 cats reaching remission. Larger reviews point the same way: Ansari Mood et al. 2025 (Sci Rep 16:1037) reported 94.12% survival in a cohort of 629 cats, and Gokalsing et al. 2025 (Pathogens 14(7):717) found 84.6% overall success across 11 studies and 650 cats. These are statistics, not promises, and every cat is different, but the odds for your cat are better than they have ever been.
Do I need to budget for supportive care during Feline Infectious Peritonitis (FIP) treatment?
Yes, it is wise to set aside a little for supportive care during Feline Infectious Peritonitis (FIP) treatment, though it is a smaller line than the antiviral itself. Supportive nutraceuticals are adjunct organ support only. They do not treat the virus, and they never replace your antiviral medicine.
Two examples your veterinarian may suggest alongside treatment are LiverRx (a SAMe and milk thistle nutraceutical for liver support) and KidneyRx (a nutraceutical for kidney support). Both are supplements, not antivirals, and are used only as adjuncts to your veterinarian-guided plan.
A few things to avoid during FIP treatment, as they can interfere with care:
Fluoroquinolone antibiotics
Spot-on flea medications
Lysine
Immune boosters
Always run any supplement or medication past your veterinarian first, so nothing works against your cat's recovery.
How can Filipino families make Feline Infectious Peritonitis (FIP) treatment more affordable?
The most affordable Feline Infectious Peritonitis (FIP) treatment is the one that works the first time, so getting the dose right for your cat's form and weight from day one is the biggest money-saver. Under-dosing only stretches the course and adds cost.
Here are practical ways to plan:
Weigh your cat accurately before asking for a quote, since every price is tied to weight.
Confirm the FIP form with your veterinarian, because the injectable dose depends on it.
Budget for the full 84 days up front, not week by week, so you never pause mid-course.
Ask our team for current pricing for your cat's exact weight band rather than guessing.
Lean on your community. Many Filipino Pawrents in FIP support groups share guidance and encouragement.
One thing we can promise clearly: you can cancel any time before your order ships for a full refund. Beyond that, there are no guarantees in medicine, only honest statistics and a treatment path many families have walked before you.
FAQ
How much does Feline Infectious Peritonitis (FIP) treatment cost in the Philippines?
There is no single fixed price, because Feline Infectious Peritonitis (FIP) treatment cost depends on your cat's weight, the FIP form, the route you choose, and the length of the course. Weigh your cat, confirm the diagnosis with your veterinarian, and ask our team for a current quote for your exact weight band.
Is the injectable or the oral route cheaper for Feline Infectious Peritonitis (FIP)?
Cost for Feline Infectious Peritonitis (FIP) varies with your cat's weight and form, so neither route is automatically cheaper for every cat. Common practice starts with GS-441524 injections, then switches to oral FipX (EIDD-1931) or the dual capsule after 2 to 4 weeks, and your veterinarian can help you balance cost with what suits your cat.
How long is the Feline Infectious Peritonitis (FIP) treatment course?
The standard Feline Infectious Peritonitis (FIP) protocol is 84 days, or 12 weeks. Chronic or severe cases may run up to 90 days or longer on your veterinarian's advice, so it is best to budget for the full course up front.
Why does my cat's weight affect the Feline Infectious Peritonitis (FIP) price?
Every dose in Feline Infectious Peritonitis (FIP) treatment is tied to weight, whether per kilogram for the injectable or per weight class for the capsules. A heavier cat simply needs more medicine, which is why an accurate weight gives the most honest quote.
Do supportive supplements add much to the Feline Infectious Peritonitis (FIP) budget?
Supportive nutraceuticals like LiverRx and KidneyRx are a smaller line in a Feline Infectious Peritonitis (FIP) budget, and they are adjunct organ support only, never a replacement for the antiviral. Ask your veterinarian whether they fit your cat's plan before buying them.
You do not have to figure this out alone, and your cat's recovery journey can start today. When you are ready, explore the treatment options and reach out to our Philippines team for pricing tailored to your cat's weight, and keep your own veterinarian in the loop for every medical decision. There is a clear path forward, and we would be honored to walk it with you.
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