What Is the Best FIP Treatment Available in the GCC?

Key takeaway: The best available treatment for Feline Infectious Peritonitis ("FIP") in the GCC is a GS-441524 based antiviral protocol, given under veterinary supervision. CureFIP offers GS-441524 subcutaneous injectables and oral capsule options, with the dose set by the form of FIP your cat has, over a standard course of 84 days (12 weeks). The right choice depends on your cat's weight, FIP form, and how they respond, so your veterinarian stays central to every decision.

A cat resting comfortably at home.

What is the best FIP treatment available in the GCC?

The best FIP treatment available in the GCC is a course built around GS-441524, the antiviral at the core of modern Feline Infectious Peritonitis care. GS-441524 is the hero ingredient, and the evidence behind it is strong and growing.

CureFIP is the GS-441524 specialist for Gulf caregivers. We match every figure to its source, we are clear about dosing and course length, and we are upfront about price.

Across the whole network, more than 100,000 cats have been treated since 2019. That scale reflects how far GS-441524 based care has come for a disease that was once considered hopeless.

Why is GS-441524 the core of FIP treatment?

GS-441524 is the core of FIP treatment because the published evidence consistently shows high success when it is used correctly. It is an antiviral that targets the virus behind Feline Infectious Peritonitis, which is a mutated form of the common feline coronavirus (FCoV).

In Pedersen et al. 2019 (J Feline Med Surg 21(4):271-281), injectable (subcutaneous) GS-441524 monotherapy produced a 92% success rate: 24 of the 26 cats that completed treatment (2.0 to 4.0 mg/kg, at least 12 weeks, with severe neurological and ocular cases excluded) remained healthy. In plain terms, more than 9 out of 10 cats that completed injectable GS-441524 treatment stayed healthy.

Larger and newer work supports this. Ansari Mood et al. 2025 (Sci Rep 16:1037) reported 94.12% survival in a cohort of 629 cats treated with GS-441524 (subcutaneous and/or oral, at least 12 weeks), meaning more than 9 out of 10 cats survived in that study.

A systematic review, Gokalsing et al. 2025 (Pathogens 14(7):717), pooled 11 studies and 650 cats and found 84.6% overall success, so more than 8 out of 10 cats were treated successfully across that review. These are statistics from real studies, not promises, and every cat is different.

What are the four forms of FIP, and how do they shape treatment?

Feline Infectious Peritonitis takes four distinct forms, and each one shapes the treatment plan and the dose your veterinarian chooses. The four forms are wet (effusive), dry (non-effusive), ocular, and neurological, and the CureFIP dosing table mirrors them exactly.

Wet (effusive) Feline Infectious Peritonitis

Wet, or effusive, FIP is the form marked by fluid building up in the abdomen or chest. You may notice a swollen belly, laboured breathing, lethargy, and weight loss despite a rounder appearance.

For wet FIP, the GS-441524 injectable dose is 6 mg/kg once daily.

Dry (non-effusive) Feline Infectious Peritonitis

Dry, or non-effusive, FIP develops without obvious fluid and is often harder to spot early. Signs can include persistent fever, poor appetite, weight loss, and vague decline over weeks.

For dry FIP, the GS-441524 injectable dose is 8 mg/kg once daily.

Ocular Feline Infectious Peritonitis

Ocular FIP affects the eyes and is its own distinct form, never a sub-type of dry FIP. Signs include a change in iris colour, cloudiness, inflammation inside the eye (uveitis), and vision loss from ocular lesions.

For ocular FIP, the GS-441524 injectable dose is 10 mg/kg once daily.

Neurological Feline Infectious Peritonitis

Neurological FIP affects the brain and spinal cord and is a separate form in its own right. Signs include seizures, head tilt, loss of balance, paralysis, and disorientation. A colour change in the eye is an ocular sign, not a neurological one.

For neurological FIP, the GS-441524 injectable dose is 10 mg/kg once daily.

What is the GS-441524 dose and protocol for each FIP form?

The GS-441524 injectable protocol is one subcutaneous injection per day, 7 days a week, for a standard course of 84 days (12 weeks), with the dose set by the form of Feline Infectious Peritonitis. The table below shows the dose for each of the four forms.

FIP form	GS-441524 dose	Schedule	Course
Wet (effusive)	6 mg/kg	1 injection/day, 7 days/week	84 days (12 weeks)
Dry (non-effusive)	8 mg/kg	1 injection/day, 7 days/week	84 days (12 weeks)
Ocular	10 mg/kg	1 injection/day, 7 days/week	84 days (12 weeks)
Neurological	10 mg/kg	1 injection/day, 7 days/week	84 days (12 weeks)

This 6/8/10 mg/kg standard is consistent with current clinical practice. Gokalsing et al. 2025 found the best outcomes within the 5 to 10 mg/kg once-daily range, adjusted for FIP type and for neurological or ocular signs, and Ansari Mood et al. 2025 describes starting doses in a similar range adjusted upward. For clarity, Pedersen et al. 2019 used 2.0 to 4.0 mg/kg, so the higher modern doses are not attributed to that study.

Which GS-441524 injectable strengths does CureFIP offer, and what do they cost?

CureFIP offers three GS-441524 subcutaneous injectable strengths, so your veterinarian can match the concentration to your cat's weight and dose. Prices are listed in AED exactly as our catalog shows them, with no conversion.

Product	Strength	Price
GS-441524 Antiviral Injectables \	20mg/ml	20 mg/ml	AED359.00
GS-441524 Antiviral Injectables \	30mg/ml 10ML	30 mg/ml	AED479.00
GS-441524 Antiviral Injectables \	40mg/ml	40 mg/ml	AED599.00

If you are importing treatment into the region, it helps to understand the practical side first. Our guide on whether it is legal to import GS-441524 for cat FIP in the UAE walks through what Gulf caregivers should know.

Is there an oral option for FIP treatment?

Yes. CureFIP offers oral options that many caregivers move to after the injection phase, and the standout is the CURE FIP™ Dual Antiviral Oral Capsules (GS-441524 + EIDD-1931).

The key advantage is simple dosing: one capsule a day chosen by your cat's weight class, with no mg calculation and no counting capsules. One pill fits one weight class.

Weight class	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

The CURE FIP™ Dual Antiviral Oral Capsules (GS-441524 + EIDD-1931) are AED499.00, taken once daily, every day, with a recommended course of 12 weeks. Our own data from about 46 treated cats on the dual antiviral showed 78.3% remission, meaning about 8 out of 10 cats on the dual antiviral reached remission. This is internal observational data, not a published trial, and every cat responds differently.

The dual capsule is commonly used after 2 to 4 weeks of GS-441524 injections, including in ocular and neurological cases, or once a cat is stable. It is not for cats with vomiting or diarrhoea, cats under 1 year old with wet (effusive) FIP, cats that cannot eat or defecate normally, or pregnant, nursing or breeding cats, because it contains EIDD-1931.

What about the EIDD-1931 capsule option?

CureFIP also offers the EIDD-1931 Oral Capsules - FIP and FCV treatment at AED149.00, with 15 mg per capsule and 60 capsules per bottle. Dosing is 1 capsule (15 mg) per 2.5 kg (5.5 lb) of body weight every 12 hours: under 2.5 kg (under 5.5 lb) takes 1, 2.5 to 5 kg (5.5 to 11 lb) takes 2, and over 5 kg (over 11 lb) takes 3.

As FipX for FIP, the standard course is 60 days, with chronic or severe cases running up to 90 days or longer depending on response. An 84-day course sits within that range. This capsule is not suitable as the starting or sole treatment for ocular or neurological FIP without the injection phase, and not for pregnant, nursing or breeding cats.

How do I choose the best FIP treatment for my cat?

The best FIP treatment for your cat is the one matched to the form of Feline Infectious Peritonitis, your cat's weight and condition, and the advice of your veterinarian. Here is a sensible path:

1. Confirm the diagnosis and the FIP form (wet, dry, ocular, or neurological) with your veterinarian.

2. Start the GS-441524 injectable protocol at the dose for that form (6, 8, or 10 mg/kg), once daily for 84 days (12 weeks).

3. After 2 to 4 weeks, if your cat is stable, discuss moving to an oral option such as the CURE FIP™ Dual Antiviral Oral Capsules (GS-441524 + EIDD-1931).

4. Monitor response with your veterinarian and adjust as advised, since correct dosing for condition and weight is what matters most.

5. Avoid fluoroquinolone antibiotics, spot-on flea medications, lysine, and immune boosters during FIP treatment.

CureFIP focuses entirely on antiviral FIP care, and our broader work with feline viruses, such as CaliciX for feline calicivirus, reflects the same commitment to matching the right antiviral to the right virus. If you are ever unsure whether your cat's signs point to FIP or another infection, your veterinarian can help you tell feline calicivirus and feline herpesvirus apart too.

We are clear about what the data shows and what it does not. There are no guarantees in medicine. The only guarantee we offer is that you can cancel any time before your order ships for a full refund.

FAQ

What is the best FIP treatment available in the GCC?

The best FIP treatment available in the GCC is a GS-441524 based antiviral protocol given under veterinary supervision, with the dose set by the form of Feline Infectious Peritonitis. CureFIP offers GS-441524 subcutaneous injectables and oral capsule options over a standard 84-day (12-week) course.

How long is the FIP treatment protocol?

The standard FIP protocol with GS-441524 injectables is 84 days (12 weeks), given as one subcutaneous injection per day, 7 days a week. The oral dual capsule has a recommended course of 12 weeks, and your veterinarian may adjust based on your cat's response.

What dose of GS-441524 does each FIP form need?

The GS-441524 injectable dose is 6 mg/kg for wet (effusive) FIP, 8 mg/kg for dry (non-effusive) FIP, and 10 mg/kg for both ocular and neurological FIP, each once daily. This 6/8/10 mg/kg standard is consistent with the 5 to 10 mg/kg range linked to the best outcomes in Gokalsing et al. 2025.

How effective is GS-441524 for FIP?

Injectable GS-441524 monotherapy showed a 92% success rate in Pedersen et al. 2019 (24 of 26 cats that completed treatment remained healthy), and Ansari Mood et al. 2025 reported 94.12% survival in 629 cats. These are statistics from published studies, not promises, and each cat responds differently.

Is there a pill option instead of injections?

Yes. The CURE FIP™ Dual Antiviral Oral Capsules (GS-441524 + EIDD-1931) are one capsule a day chosen by weight class, 0 to 2.5 kg (0 to 5.5 lb), 2.5 to 5 kg (5.5 to 11 lb), or over 5 kg (over 11 lb), with no mg calculation. They are commonly used after 2 to 4 weeks of injections or once a cat is stable, and are not for pregnant, nursing or breeding cats.

If your cat has been diagnosed with FIP, you do not have to navigate it alone. Learn more about the GS-441524 based FIP treatment options in the Gulf and talk with our team or your own veterinarian about the plan that fits your cat best, so your companion has the clearest path back to eating, playing, and coming home to you.