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Recovery in 4 to 8 Weeks
87% Success Rate
Zero Injections, easy at home treatment
Substantially higher antiviral potency than Molnupiravir (EIDD-2801)
Rapid reduction of FCV replication
long-term management of calicivirus

Scientifically
Verified
"Our treatments are developed based on findings from internationally peer-reviewed research."

Professional
Treatment
Advice
"Our treatment support team is technically trained to assist with treatment-related questions."

Fast
Delivery
“We operate local warehouses in the countries we serve, ensuring reliable and timely delivery for every order.”

No
Injections
“Our treatments are provided in soft gel capsules and are easy to administer at home, taken twice daily (12 hours apart).”
"EIDD-1931 is not suitable for all FIP conditions. Cats with neurologic and ocular FIP symptoms, appetite and digestive problems, and pre-existing kidney and liver diseases should start FIP treatment with GS-441524 injections for 2 - 4 weeks before switching to EIDD-1931."
FAQs
What is CaliciX™ Max used for?
CaliciX™ Max is a high-strength systemic antiviral capsule formulated for cats suffering from severe, refractory, or high-viral-load feline calicivirus (FCV) disease, where standard-dose therapy may be insufficient.
How is CaliciX™ Max different from CaliciX™?
CaliciX™ Max delivers 30 mg of EIDD-1931 per capsule, enabling veterinarians to achieve higher systemic antiviral suppression with fewer capsules compared to CaliciX™.
It is intended for step-up therapy in advanced, severe, or poorly responsive feline calicivirus (FCV) cases.
When should CaliciX™ Max be considered for FCV therapy?
CaliciX™ Max may be considered under veterinary supervision when a cat has:
• Severe oral or oropharyngeal disease
• Refractory FCGS or post-extraction stomatitis
• High systemic viral burden
• Poor response to 2-4mg/kg dosing
• Larger body weight requiring higher per-dose exposure
What FCV-associated conditions is CaliciX™ Max designed to support?
CaliciX™ Max is formulated to support cats with severe FCV-associated disease, including:
• Severe feline chronic gingivostomatitis (FCGS)
• Caudal stomatitis with extensive inflammation
• Deep lingual ulceration (viral glossitis)
• Multifocal oral ulceration
• Virulent systemic feline calicivirus (VS-FCV)
Can CaliciX™ Max help cats with virulent systemic calicivirus (VS-FCV)?
Yes, CaliciX™ Max is designed for veterinarian-directed use in such severe presentations, alongside intensive supportive care.
Is CaliciX™ Max an antibiotic?
No. CaliciX™ Max is not an antibiotic. It is a direct-acting antiviral designed to suppress FCV viral replication. Antibiotics may still be used separately to manage secondary bacterial infections when indicated.
How does EIDD-1931 work in severe FCV disease?
EIDD-1931 interferes with viral RNA replication by inducing lethal mutagenesis in RNA viruses. This mechanism:
• Does not rely on viral proteases
• Has a high genetic barrier to resistance
• Works independently of host immune status
Is CaliciX™ Max suitable for long-term use?
CaliciX™ Max may be used as part of an extended management plan in cats with chronic or refractory feline calicivirus (FCV) where ongoing antiviral control is clinically indicated.
Treatment duration, dose adjustments, and monitoring should always be determined by a licensed veterinarian based on the individual patient’s response and overall health status.
Can CaliciX™ Max replace dental extraction or supportive care?
No. CaliciX™ Max is intended to be part of a comprehensive veterinary treatment plan, which may include dental procedures, pain control, nutritional support, and other therapies as needed.
Is CaliciX™ Max the same as human molnupiravir?
No. CaliciX™ Max is not the same as human molnupiravir.
It contains EIDD-1931, the active antiviral metabolite of molnupiravir—the form that directly exerts antiviral activity. Published research indicates that EIDD-1931 demonstrates significantly higher antiviral potency than molnupiravir, which is a prodrug requiring metabolic conversion.
CaliciX™ Max is formulated specifically for veterinary use in cats, with dosing, capsule size, and clinical intent designed for feline patients rather than humans.
Is CaliciX™ Max safe for all cats?
It may not be suitable for:
• Pregnant or breeding cats
• Cats with significant hepatic or renal disease
CaliciX™ Max is intended for veterinary-supervised use only.
Why does CaliciX™ Max come in a 30 mg strength?
The 30 mg strength allows veterinarians to:
• Achieve higher antiviral exposure
• Reduce capsule burden in large or severe cases
• Improve dosing accuracy and compliance
This makes it suitable for advanced or high-risk FCV disease.
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