Maxpaw New Upgraded Small-Size GS-441524 Tablets: Making the Fight Against FIP Easier for Every Cat
For families battling FIP, the journey is more than a medical challenge – it's also filled with fear, uncertainty, and exhaustion. Over the years, MaxPaw has supported more than 17,000 families and achieved a cure rate of up to 98%, bringing hope and new beginnings to countless cats and their owners.
One belief has guided us from the start: progress only happens when we focus on what FIP families truly need.
That's why we are introducing our newly upgraded small-sized 15mg GS-441524 tablets, designed for better efficacy and a more comfortable experience:
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Upgraded Enteric Coating – Protects the active ingredient from stomach acid and releases it in the small intestine for better absorption and more stable efficacy.
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Small Arrow-Shaped Design – Easier for cats to swallow, reduces stress, and improves treatment compliance.
Why did we develop a new small-strength tablet?
Because FIP medication needs to enter the cat's bloodstream precisely, consistently, and in high enough levels to work effectively.
According to Cornell University (2024), FIP develops when certain strains of feline coronavirus (FCoV), which normally live in the gastrointestinal tract—especially the small intestine—mutate inside the body. About 10% of these intestinal viruses can transform into the aggressive, systemic FIP virus. Once that happens, the virus infects white blood cells and spreads throughout the body via the blood and lymphatic system, reaching organs such as the liver, kidneys, chest cavity, and brain.
This makes FIP a systemic disease, which means the medication must be absorbed fully into the bloodstream to stop viral replication throughout the entire body.
How does a tablet enter the bloodstream?
Most oral medications—including GS-441524—are absorbed in the small intestine, especially the jejunum and ileum, because:
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The small intestine has a large surface area, like a sponge.
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It has special "transport channels" that move nutrients and drugs into the blood.
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The environment is ideal for drug absorption.
Before reaching the intestine, the tablet must pass through the stomach. GS-441524 is a hydrophilic nucleoside analog, which is unstable in stomach acid. If the drug is broken down in the stomach, its effectiveness drops significantly.
The GS-441524 tablet needs protection to reach the small intestine.
To avoid stomach acid damage and reach the intestines safely, the drug needs a protective enteric coating. This special coating helps the pill "bypass" stomach acid and release directly in the intestines.
As noted in Pedersen et al. (2019, Journal of Feline Medicine and Surgery:
"The drug must reach sufficient plasma concentrations to inhibit systemic viral replication."
This underscores why the tablet must remain intact until it reaches the intestines.
Real Challenges Faced by Cat Owners
Cats often resist large pills. Swallowing is difficult, stressful, and can quickly turn every dose into a struggle. Many owners try breaking or splitting tablets, but this destroys the protective coating, exposing the drug to stomach acid and compromising absorption.
This means many cats fail to achieve the blood concentration needed for effective treatment—a problem we felt compelled to solve.
Maxpaw's New Small-Size 15mg Tablets
① Upgraded Enteric Coating – Stable absorption where it matters.
The GS-441524 tablet has poor stability in acidic environments. If released too early in the stomach, its activity decreases.
The new Maxpaw enteric coating allows the tablet to:
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Remain intact through the stomach.
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It is absorbed precisely in the small intestine.
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Enter the bloodstream for systemic transport to inhibit virus replication. This point is core to the treatment's efficacy.
A simple analogy: Think of the tablet as a "letter with a mission."
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Stomach = The Storm
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Intestines = The Post Office
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Bloodstream = The Delivery System
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Infected Cells = The Final Destination
The enteric coating is what ensures the “letter” arrives safely.
② Smaller Arrow-Shaped Tablet – Easier swallowing, less stress.
FIP is common in kittens, who naturally have narrow throats and limited swallowing ability.
The new small-size MaxPaw tablets are more compact and shaped for easier swallowing. Trial families shared feedback such as:
"He finally stopped struggling." "So much easier to give than the large pills."
This upgrade reflects MaxPaw’s core values.
We firmly believe that fighting FIP should never be a lonely battle.
Our mission is to make this journey easier, clearer, and more hopeful through science-driven solutions, thoughtful design, and constant support.
From formulation and coating technology to tablet shape and real-world usability, every improvement comes from listening to over 17,000 families.
Our 24/7 one-on-one support reflects our commitment to every cat and every caregiver.
We strive to set a new industry standard—one built on expertise, empathy, and the belief that every cat deserves the best possible chance at recovery.
