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CaliciX™ Max is a high-dose oral antiviral for cats with severe, refractory or high-viral-load feline calicivirus (FCV), where the standard 15 mg strength has not been enough. Each capsule contains 30 mg of EIDD-1931, the active metabolite of molnupiravir.
It is used under veterinary supervision for cats that need greater antiviral exposure, judged on body weight, disease severity and how the cat has responded so far.
Severe oral and oropharyngeal disease
- Severe feline chronic gingivostomatitis (FCGS)
- Caudal stomatitis with extensive inflammation
- Ulcerative stomatitis unresponsive to dental extraction
- Viral glossitis with deep lingual ulceration
- Multifocal buccal, labial and palatal ulcers
These cases present with intense oral pain, heavy drooling, difficulty eating and swallowing, weight loss and wasting, and persistent halitosis or oral bleeding.
Virulent systemic feline calicivirus
- Virulent systemic feline calicivirus (VS-FCV)
- Fever and marked lethargy
- Facial and limb oedema
- Lameness
- Pulmonary involvement and pneumonia
- Raised hepatic and pancreatic enzymes
- A rapidly worsening inflammatory response
Refractory and relapsing cases
- Continued calicivirus shedding
- Feline chronic gingivostomatitis that remains active after extraction
- Chronic stomatitis relapsing after steroid or immunosuppressant use
- Larger cats requiring greater antiviral exposure
Why the higher strength
Severe calicivirus disease can require higher systemic concentrations to suppress replication quickly and limit viral damage to the mucosa and beyond. The 30 mg format reaches those concentrations with fewer capsules per dose, which improves dosing accuracy and makes the course easier to sustain. It is the step-up option when 15 mg is no longer enough.
Before you start
Not every case of stomatitis or gingivitis in cats is caused by feline calicivirus. Have your cat examined before starting. CaliciX™ Max is a high-dose product for severe cases; mild to moderate disease should use CaliciX™ 15 mg.