MolnuFIP™ delivers pure EIDD-1931, the active antiviral metabolite of molnupiravir, in a formulation designed exclusively for feline physiology. By using EIDD-1931 directly—rather than modifying human molnupiravir capsules—MolnuFIP™ provides a more precise, consistent, and veterinary-appropriate approach to FIP care.
Purpose-Built Feline Formulation
Each MolnuFIP™ capsule contains 15 mg of EIDD-1931, equivalent in activity to approximately 66 mg of molnupiravir (EIDD-2801).
This formulation is optimized for:
Feline metabolic rate
Gastrointestinal absorption profile
Reliable dose–response performance
The result is accurate, predictable antiviral activity with reduced variability compared to human-intended products.
Proven Antiviral Potency
Published research demonstrates that:
EIDD-1931 exhibits up to 10× greater in-vitro antiviral potency compared with molnupiravir (EIDD-2801).
EIDD-1931 demonstrates 7.3× higher potency than GS-441524 under similar test conditions.
This potency advantage enables therapeutic efficacy at lower milligram doses, supporting improved tolerability and rapid clinical response.
Reference:
Molnupiravir and Its Active Form, EIDD-1931, Show Potent Antiviral Activity Against Enterovirus Infections In Vitro and In Vivo
https://www.mdpi.com/1999-4915/14/6/1142
Comprehensive Support Across FIP Presentations
MolnuFIP™ is formulated to support recovery across all major forms of FIP, including:
Wet FIP (effusive)
Dry FIP (non-effusive)
Mixed or transitional presentations
Additional formulation benefits:
Optimized for feline metabolism and tissue penetration
Highly consistent blood-level performance
Designed to support low relapse incidence when used according to veterinary guidance
Precision, Safety & Confidence in Every Dose
With MolnuFIP™, your cat receives an advanced, veterinary-engineered antiviral designed for dependable performance:
Scientifically grounded formulation
Consistent mg-per-kg dosing
No need to modify human medications
Backed by modern antiviral research
MolnuFIP™ provides a clearer, more controlled path to FIP recovery, supporting your cat’s return to comfort, vitality, and quality of life.
EIDD-1931, 15mg | treatment for 30 days
Less than 2.5kg cats, 1 capsule every 12 hours
2.5 kg to 5 kg cats, 2 capsules every 12 hours
Above 5 kg cats, 3 capsules every 12 hours.Size #3 capsules, small and easy for feeding.
Capsule and its content can be mixed with cat food for easy feeding.

Reviews
After a month, we go from GS vials to EIDD (oral medications). In just a few weeks, my cat regains her vigor and voluntarily eats and drinks, demonstrating how GS has changed our lives. Our veterinarian certifies that we can switch to oral medications because of her improvement. I am certain that she is completely recovered as of right now. We have a few days left to finish her EIDD oral medications before we can go back to the vet for more testing. We are currently on day 60 of this adventure.
Initially my cat uses GS441524 pills however on the first month, this medication was released. we gave it a try, it indeed still works. now we already finished the medication and my baby is great more than ever! This medication saves my cat and my wallet!
we give 2 pills in the morning and 2 pills at night for 30 days unlike the GS pills that 1 pill/day for almost 3 months.
Hindi sya effective kasi hindi ako nag gs injection. Ilang days ko syang nagamit at napainom sa cat ko pero hindi parin sya gumagaling. Kaya not recommended sa cat na may wet fip at hindi pa nag ggs injection.