Cat · Felis catus · typical adult weight 2.50–7.00 kg
Interferon Omega (Feline) is dosed at 1 MU/kg SC q24h for 5 days, repeat at 14, 60, and 120 days in cats, per VIRBAGEN - Interferon Omega [UK Datasheet for Dogs and Cats]. Virbac SA; 2022. — BSAVA Small Animal Formulary, 10th Ed, Part A, p.211. Interferon Omega (Feline) is used in cats for FeLV/FIV/FIP antiviral immunotherapy. Routes documented in cats: SC. A typical adult cat weighs 2.50–7.00 kg. ExoticRx lists 1 cited dose rule for Interferon Omega (Feline) in cats, drawn from published veterinary references. Verify against current literature before clinical use.
US trade names: Virbagen Omega
| Route | Dose | Frequency | Duration | Indication | Evidence | Source |
|---|---|---|---|---|---|---|
| SC | 1 MU/kg | q24h for 5 days, repeat at 14, 60, and 120 days | Protocol: days 0-4, 14-18, 60-64, 120-124 | FeLV/FIV/FIP antiviral immunotherapy | Moderate | VIRBAGEN - Interferon Omega [UK Datasheet for Dogs and Cats]. Virbac SA; 2022. — BSAVA Small Animal Formulary, 10th Ed, Part A, p.211Compilation only — we have not located an independent source that prints this figure. |
Every held source for this drug and species, as printed. Where they differ, both are shown — the choice is yours, not ours.
| Dose (iu/kg) | Route | Source | As printed |
|---|---|---|---|
| 10 | PO | Papich Saunders Handbook of Veterinary Drugs, 4th edp.430 | • 10 units/kg human interferon alpha on an alternate-week schedule PO. (Although |
Figures are transcribed from the cited page or table of each held edition and are shown for reference only. They are not dose recommendations, they do not feed the calculator, and none has been reviewed by a veterinarian.
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Feline recombinant interferon omega with antiviral, antiproliferative, and immunomodulatory activity. Species-specific, reducing antibody formation.
Transient fever and lethargy. Approved for feline use in EU/Japan. Not available in US. Species-specific so no neutralizing antibodies.
Species-specific contraindications and adverse-reaction reports for cats may differ from canine / feline reference data — consult the primary citations listed with each rule.
Interferon Omega (Feline) dose range in cats, with cited source references: SC 1 MU/kg q24h for 5 days, repeat at 14, 60, and 120 days. Reference ranges from cited sources — verify against current literature before clinical use.
Documented routes for Interferon Omega (Feline) in cats: SC.
Cited course lengths for Interferon Omega (Feline) in cats include: Protocol: days 0-4, 14-18, 60-64, 120-124. Duration depends on the indication — match it to the specific dose rule in the table above.
Interferon Omega (Feline) is indicated in cats for: FeLV/FIV/FIP antiviral immunotherapy.
These are general warnings for Interferon Omega (Feline) across species; consult the cat dosing table above for species-specific guidance. Transient fever and lethargy. Approved for feline use in EU/Japan. Not available in US. Species-specific so no neutralizing antibodies.
Why a species-specific page? Interferon Omega (Feline) pharmacokinetics differ across species: dose ranges, intervals, and route preferences are not interchangeable. Cross-extrapolation from canine doses is unsafe in cats — the rules above are the citations specific to this species, not generic recommendations.
Sourced from published veterinary references; awaiting credentialed clinical reviewer. See our editorial process. Reference only — not veterinary advice.