Cat · Felis catus · typical adult weight 2.50–7.00 kg
Rifampin is dosed at 10–15 mg/kg PO q24h in cats, per Malik R, Smits B, Reppas G, Laprie C, O’Brien C, Fyfe J. Ulcerated and nonulcerated nontuberculous cutaneous mycobacterial granulomas in cats and dogs. Vet Dermatol. 2013;24(1):146-153.e32-3. (Plumb's Rifampin ref 24, supporting the corroborating feline entry) doi:10.1002/9781118644317.ch20 — Verified against BSAVA Small Animal Formulary, 10th Ed, Part A, p.376 (2026-08-01).. Rifampin is used in cats for Mycobacterial infections (combination). Routes documented in cats: PO. A typical adult cat weighs 2.50–7.00 kg. ExoticRx lists 1 cited dose rule for Rifampin in cats, drawn from published veterinary references. Verify against current literature before clinical use.
US trade names: Rifadin
| Route | Dose | Frequency | Duration | Indication | Evidence | Source |
|---|---|---|---|---|---|---|
| PO | 10–15 mg/kg | q24h | Months (per mycobacterial protocol) | Mycobacterial infections (combination) | Weak | Malik R, Smits B, Reppas G, Laprie C, O’Brien C, Fyfe J. Ulcerated and nonulcerated nontuberculous cutaneous mycobacterial granulomas in cats and dogs. Vet Dermatol. 2013;24(1):146-153.e32-3. (Plumb's Rifampin ref 24, supporting the corroborating feline entry) doi:10.1002/9781118644317.ch20 — Verified against BSAVA Small Animal Formulary, 10th Ed, Part A, p.376 (2026-08-01). |
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These ranges are per kg. Enter your cat's weight to get the precise dose and draw-up volume — unit and concentration math done for you.
Inhibits bacterial DNA-dependent RNA polymerase, blocking RNA synthesis. Excellent intracellular penetration.
Always use in combination (rapid resistance when used alone). Potent CYP inducer (many drug interactions). Orange/red discoloration of urine, tears. Hepatotoxic — monitor liver enzymes.
Species-specific contraindications and adverse-reaction reports for cats may differ from canine / feline reference data — consult the primary citations listed with each rule.
Rifampin dose range in cats, with cited source references: PO 10–15 mg/kg q24h. Reference ranges from cited sources — verify against current literature before clinical use.
Documented routes for Rifampin in cats: PO.
Cited course lengths for Rifampin in cats include: Months (per mycobacterial protocol). Duration depends on the indication — match it to the specific dose rule in the table above.
Rifampin is indicated in cats for: Mycobacterial infections (combination).
These are general warnings for Rifampin across species; consult the cat dosing table above for species-specific guidance. Always use in combination (rapid resistance when used alone). Potent CYP inducer (many drug interactions). Orange/red discoloration of urine, tears. Hepatotoxic — monitor liver enzymes.
Why a species-specific page? Rifampin 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.