TREATMENT PROTOCOL — Protocol
A standard protocol, by form
and severity.
The dosing protocol recommended by FIP Support optimizes dosage and duration according to the dry and wet
forms. The content of this page is treatment guidance; actual dosage should follow the final judgment of a
veterinarian.
Standard treatment flow
Five steps from diagnosis to completion of treatment
01
Diagnosis & severity assessment
Blood tests, ultrasound, symptom review, and assessment of effusion characteristics
02
Initial treatment: injection
15–25 days of intensive treatment with the injection (20 mg/ml) is recommended
03
Transition to oral
Once the condition is stable, switch to oral treatment with tablets
04
Adjustment & observation
Adjust dosage according to symptoms and response; monitor with regular testing
05
Treatment complete
Dry form: usually 84 days (minimum 60) / Wet form: usually 60 days (minimum 40)
DRY TYPE — Dry form
Dry form injection dose
Using a 6 ml vial, 20 mg/ml
Standard dose (per kg body weight)
0.6 – 0.8ml / kg
Severe cases (neurological symptoms, advanced uveitis)SEVERE 0.8 – 1.0 ml/kg
Daily tablet dose by weight (oral phase)
Up to 2.0 kg
1 tab
/ day (once daily)
Up to 4.0 kg
2 tab
/ day (once daily)
As a baseline, 1 tablet per 2 kg of body weight. Kittens under 1 kg: 0.5 tablet. For over 4 kg or
intermediate weights, adjust at the veterinarian's discretion.
Main indications & severe symptoms
Hind-limb weakness (unsteadiness, difficulty standing) / neurological symptoms (seizures, circling, etc.) / ocular lesions (uveitis, clouding of the eye)
WET TYPE — Wet form
Wet form injection dose
Using a 6 ml vial, 20 mg/ml
Recommended dose (per kg body weight)
0.4ml / kg
Dose range (adjust to condition) 0.4 – 0.6 ml/kg
Daily tablet dose by weight (oral phase)
Up to 2.0 kg
0.5 tab
half tablet / day
Up to 4.0 kg
1 tab
/ day (once daily)
As a baseline, 0.5 tablet per 2 kg of body weight. Kittens under 1 kg: 1/4 tablet. The wet form can
generally be managed at a relatively low dose.
Key points for setting the dose
Increase or decrease according to symptom severity / check the degree of reduction in abdominal/chest fluid / transition to oral after effusion decreases and the condition stabilizes
CO-MEDICATION — Combination therapy
Recommended combination therapy for both forms
Rather than antiviral medication alone, combining it with anti-inflammatory and organ-protective measures can
improve the prognosis.
Required
Anti-inflammatory drugs
To suppress inflammation from vasculitis and granulomas, always use in combination. Use for about 10 days from the start of treatment as a guide, and avoid long-term continuous use. Because oxidative stress in the body is thought to remain high even after 10 days, also consider antioxidant supplements (vitamin E, CoQ10, SAMe, glutathione, resveratrol, broad-spectrum CBD, etc.).
Prednisolone
Steroids
NSAIDs
Recommended
Liver protectants / supplements
To reduce the burden on the liver from long-term treatment, we recommend combining where possible. Monitor with regular blood tests during the treatment period.
SAMe (liver support)
Vitamin E
CoQ10
Glutathione
Resveratrol
Broad-spectrum CBD
CRITICAL POINTS — Operation & management
Key points common to both forms
i.
Transition from injection to tablets
For the first 15–25 days, injections reliably maintain blood concentration; switching to tablets after the condition stabilizes reduces the risk of relapse.
ii.
Individual adjustment by symptoms
The doses shown are guidelines. The veterinarian flexibly adjusts dose and duration according to symptom improvement and changes in body weight.
iii.
Owner adherence
Because treatment is long (up to 84 days), maintaining the owner's motivation and reliable daily dosing compliance is important.
SUMMARY — Protocol comparison
Dry form / Wet form summary
| Item |
Dry form |
Wet form |
| Initial injection period |
15 – 25 days |
15 – 25 days |
| Recommended injection dose |
0.6 ml/kg |
0.4 ml/kg |
| Injection dose range |
0.6 – 0.8 ml/kgsevere up to 1.0 ml/kg |
0.4 – 0.6 ml/kg |
| Oral tablet baseline60 mg / tablet |
1 tablet per 2 kgunder 1 kg: 0.5 tablet |
0.5 tablet per 2 kgunder 1 kg: 1/4 tablet |
| Oral tablet guide by weightonce daily |
≤2 kg: 1 tab / ≤4 kg: 2 tab |
≤2 kg: 0.5 tab / ≤4 kg: 1 tab |
| Total treatment period |
usually 84 daysminimum 60 |
usually 60 daysminimum 40 |
KEY TAKEAWAYS
1
Set dose and duration
by form and severity
2
Combine with anti-inflammatory
and liver-protective drugs
3
Observe continuously and
adjust the plan as needed
⚠ Disclaimer
Actual dosage and duration are determined by the veterinarian based on the individual's symptoms and test results.
If injecting the cat is difficult, a tablet-only approach is also possible. This page is treatment guidance and is
not a substitute for medical judgment.