Complete Guide to Modern FIP Treatment(Official Blog)

MaxPaw Health

About FIP: Disease Overview & Breakthroughs
What Is GS-441524 and Why Is It the Most Effective FIP Treatment?
How MaxPaw Improves and Upgrades the Original Panda System
Injectable vs Oral GS-441524 (Absorption, Stability, Patient Suitability)
MaxPaw Official Dosage Guidelines (Injectable + Oral Tablets)
Standard Treatment Duration and Clinical Response (12-Week Protocol)
When to Switch from Oral Back to Injection
Common Issues During Treatment & Evidence-Based Solutions
MaxPaw Quality Assurance & QC Standards
Frequently Asked Questions (FAQ)

About FIP: Disease Overview & Breakthroughs

Feline Infectious Peritonitis (FIP) is caused by a mutated strain of feline coronavirus.

For decades, it was considered a fatal illness, with nearly 100% mortality once clinical signs appeared.

Today, with modern antiviral therapy, particularly GS-441524, FIP has transformed from a “hopeless” disease into one that is highly treatable and often curable.

FIP occurs in several clinical forms:

Wet (Effusive) FIP – abdominal fluid (ascites) or chest fluid (pleural effusion)
Dry (Non-effusive) FIP – granulomatous lesions without fluid
Ocular FIP – inflammation of the eyes, cloudy eyes, vision impairment
Neurological FIP – tremors, seizures, ataxia, paralysis, behavior changes

GS-441524 is currently the most effective therapy for all types of FIP.

What Is GS-441524 and Why Is It the Most Effective FIP Treatment?

GS-441524 is a nucleoside analog that blocks the replication of FIP virus inside infected cells. It has become the global standard for FIP treatment due to its:

High efficacy across all FIP forms
High safety margin compared to older therapies
Predictable pharmacokinetics
Strong performance in real-world clinical data

Veterinarians and treatment centers worldwide now rely on GS-441524 as the primary frontline therapy for FIP.

How MaxPaw Improves and Upgrades the Original Panda System

MaxPaw Health is the upgraded evolution of the Panda brand, built on years of treatment experience and thousands of recovered FIP cases.

Key Improvements in MaxPaw Products:

✓ Higher Purity (>99%)

Ensures stable blood levels and reduces side effects.

✓ Dual-Phase Release Oral Tablets

Improves absorption consistency and reduces the “absorption ceiling” problem common in high-dose cases.

✓ Transparent and Accurate mg Labeling

No confusing “equivalent dose” systems — MaxPaw clearly states actual mg content.

✓ COA (Certificate of Analysis) for Every Batch

Provides consistent potency and purity.

✓ Enhanced High-Dose Performance for Neurological FIP

Designed to be effective even when higher doses are required.

MaxPaw’s goal is to deliver one of the most stable, transparent, and trustworthy FIP treatment systems for pet owners worldwide.

Injectable vs Oral GS-441524

Both routes are effective when correctly used. Each has unique advantages depending on the cat’s clinical condition.

Injectable GS-441524 (SC)

Advantages:

Highest absorption and most predictable blood levels
Fastest onset of action
Ideal for severe, neurological, or unstable cases

Disadvantages:

Injection pain and occasional skin reactions
Higher handling difficulty for owners

Oral GS-441524 Tablets (PO)

Advantages:

No pain, easy to administer
Well-suited for 8–12 week long treatment courses
MaxPaw’s dual-phase tablets improve absorption stability

Disadvantages:

Not ideal for vomiting or severe diarrhea
Some supplements can interfere with absorption

Hybrid Approach (Most Common)

Start with injections for 3–7 days in severe cases, then switch to oral tablets once the cat stabilizes.

MaxPaw Official Dosage Guidelines

Doses must always be calculated using the cat’s current body weight and adjusted as the cat gains weight.

Injectable Dosage (SC, once daily)

FIP Form	Recommended Dose (SC)
Wet FIP – Abdominal Effusion	5 mg/kg
Wet FIP – Thoracic Effusion	6 mg/kg
Dry FIP	6 mg/kg
Ocular FIP	8 mg/kg
Neurological FIP	10 mg/kg

Oral Tablets (PO)

Oral dosages are higher due to lower bioavailability.

FIP Form	Recommended Dose (PO)
Wet FIP	15 mg/kg q24h or q12h
Dry FIP	15 mg/kg q24h or q12h
Ocular FIP	20 mg/kg q24h or q12h
Neurological FIP	10–15 mg/kg q12h (must be divided)

Division into q12h dosing is crucial for high-dose or neurological cases.

Standard 12-Week Treatment Course

Although some cats improve within 2–4 weeks, global data shows:

Most recover fully by 8–10 weeks
The highest cure rate and lowest relapse rate occurs with a 12-week treatment course

MaxPaw’s official recommendation:

All cats should complete a full 12-week GS-441524 treatment unless medically advised otherwise.

When to Switch from Oral Back to Injection

Switch to injectable GS-441524 if any of the following occur:

Persistent vomiting (oral absorption becomes unreliable)
Severe diarrhea
Sudden neurological deterioration
Worsening clinical signs despite correct oral dosing
Unstable lab results

Injections provide rapid and predictable drug absorption in these cases.

Common Issues During Treatment & Solutions

Injection Site Pain

Rotate injection sites
Keep the skin clean and shaved
Mild scabbing is normal

Weight Gain and Recalculation

As cats recover, they often gain weight. Doses must be recalculated every 0.5–1.0 kg gained.

Relapse

Relapse is treatable and usually responds well to:

A higher dose
A full new treatment course

Supplements During Treatment

MaxPaw recommends appropriate supportive supplements:

Recommended:

Liver support (SAMe, milk thistle, NAC)
Gastrointestinal support (safe probiotics, gut-soothing ingredients)
Omega-3
Avoid:

Calcium powders
High-mineral multivitamins
Unknown “immune boosters”

MaxPaw will provide dedicated FIP recovery supplements compatible with GS-441524 treatment.

MaxPaw Quality Assurance & QC Standards

MaxPaw maintains one of the strictest QC systems in the FIP treatment market:

>99% purity GS-441524
COA for every batch
Standardized production pipeline
Accurate mg labeling
Optimized oral absorption technology

Consistency and transparency are central to MaxPaw’s reliability.

Frequently Asked Questions (FAQ)

Q1: Is FIP still a fatal disease?

No. With correct GS-441524 treatment, most cats recover fully.

Q2: Is oral GS as effective as injectable?

Yes. When properly formulated and correctly dosed.

Q3: Can my cat take supplements during treatment?

Yes. MaxPaw recommends targeted supplements to support liver, GI tract, and immune balance.

Q4: How do I know when to stop treatment?

Stopping is based on:

Clinical recovery
Stable blood work
No new symptoms

Q5: What should I do if my cat relapses?

Most relapses can be cured with a second course at a higher dose.