Understanding Feline Infectious Peritonitis (FIP) in Cats
Symptoms, Causes, and Treatment Guide
FIP is a serious and often devastating disease that every cat owner should understand. Although it used to be considered fatal, new treatment options now offer hope. Learning about FIP in cats can help you detect symptoms early and take action quickly.
What Is FIP?
FIP develops when the feline coronavirus mutates inside the body. While most cats carry this virus without problems, a small number experience a mutation that leads to FIP. In most cases, FIP in cats affects kittens under two years old, cats with weak immune systems, and cats in multi-cat environments. Early awareness is very important — read our complete FIP symptoms guide to know what to watch for.
Types of FIP in Cats
1. Wet FIP (Effusive)
Wet FIP causes fluid buildup in the abdomen or chest. Common signs include swollen belly, difficulty breathing, lethargy, weight loss, and persistent fever. The Rivalta test is one of the most useful tools for diagnosing wet FIP.
2. Dry FIP (Non-Effusive)
Dry FIP does not involve fluid buildup. Instead, it affects organs directly. Symptoms may include neurological problems, eye inflammation, liver issues, and general weakness. This form is harder to detect early, which is why it is often diagnosed late.
Diagnosing FIP
Diagnosing FIP in cats can be difficult because symptoms often resemble other diseases. Veterinarians usually perform blood tests, use imaging such as ultrasound, and analyse fluid samples for wet FIP. No single test can confirm FIP completely — diagnosis relies on a combination of findings. Read our guide to the 4 FIP diagnostic tests for a full breakdown.
Treatment Options for FIP
In the past, FIP in cats had very limited treatment options. Today, GS-441524 offers an effective solution with a 92% success rate established by the Pedersen et al. 2019 UC Davis trial. This treatment stops viral replication, reduces disease progression, and supports recovery. Many cats now achieve remission when treatment starts early and the full 84-day protocol is completed.
FIP Cure Plus supplies GS-441524 in injectable 20 mg/ml, injectable 30 mg/ml, and oral capsule forms. Use our dosage calculator to get the correct dose for your cat’s weight and FIP form.
Prevention and Awareness of FIP
Although preventing FIP completely is difficult, you can reduce the risk by maintaining good hygiene, reducing stress, and supporting your cat’s immune system. Early detection remains the most important factor. Read our guide on why every day counts in FIP treatment.
Final Thoughts
FIP remains a serious condition. However, new treatment options have changed the outcome for many cats. Early recognition, proper diagnosis, and timely treatment can significantly improve survival chances. If you notice any symptoms, consult your veterinarian immediately and contact FIP Cure Plus for guidance on starting treatment.
The FIP Cure Plus team is available in English and Arabic at info@fipcureplus.com.
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FIP Cure Plus — transparent, evidence-based GS-441524 treatment for cats across the Gulf.