The 84-Day FIP Treatment Protocol: What to Expect at Each Stage
Why Exactly 84 Days?
The 84-day (12-week) protocol is the scientifically established duration for ensuring the FIP virus is completely eliminated. Stopping early greatly increases the risk of relapse.
Correct Doses Throughout the Protocol FIP
- Wet: 6 mg/kg/day
- Dry: 8 mg/kg/day
- Ocular: 10 mg/kg/day
- Neurological: 10 mg/kg/day
Do not reduce the dose even if the cat improves. Weigh your cat weekly and adjust the dose if its weight changes.
Stage One FIP: Weeks 1–4
This is the critical stage that determines the cat's response to treatment.
- Improved appetite during the first two weeks — an early positive sign
- Reduced fever during the first few days
- In wet FIP: fluid begins to decrease during the first two weeks
- Do not stop treatment even if the cat appears well
Stage Two FIP: Weeks 5–8
- Continue treatment daily without interruption
- Perform a complete blood test to confirm improvement
- Monitor liver and kidney function
- Gradual weight gain
Stage Three: Weeks 9–12
- Complete the protocol through day 84 — do not stop early
- Final blood test in week 12
- The cat appears completely well — this is normal; continue
Observation Stage: After Day 84
- Monitor for an additional 12 weeks
- Perform a blood test every month during observation
- If relapse symptoms appear, contact us immediately
Important Tips Throughout the Protocol
- Give your cat fresh natural food (chicken, fish)
- Do not use fluoroquinolone antibiotics
- Do not use lysine with GS-441524
- Weigh your cat weekly and adjust the dose
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Need Help?
Our team is available in Arabic and English to help you at every step of treatment.
Email: Info@fipcureplus.com
Useful Resources
Is vitamin B12 part of FIP treatment?
Vitamin B12 (cobalamin) may be included in a veterinarian-supervised supportive-care plan, especially if testing shows a deficiency or a cat has digestive problems affecting nutrient absorption. B12 supports normal cellular and neurological functions, but it is not an antiviral and cannot cure FIP or replace GS-441524. Benefits for cats with normal B12 levels have not been established.
For cats receiving injectable GS-441524, FIP Cure Plus also lists 20 mg/ml GS-441524 with vitamin B12 and 30 mg/ml GS-441524 with vitamin B12. These are formulation options, not an instruction to add extra B12 or change the antiviral regimen. A veterinarian should assess the appropriate treatment plan.
Medical reference: ABCD veterinary FIP guidelines.