Cat · Felis catus · typical adult weight 2.50–7.00 kg
Atovaquone is dosed at 15 mg/kg PO q8h in cats, per Cohn LA, Birkenheuer AJ, Brunker JD, Ratcliff ER, Craig AW. Efficacy of Atovaquone and Azithromycin or Imidocarb Dipropionate in Cats with Acute Cytauxzoonosis. Journal of Veterinary Internal Medicine. 2011;25(1):55-60. doi:10.1111/j.1939-1676.2010.0646.x — Verified against Plumb's Veterinary Drug Handbook, 10th Ed, p.136 (2026-08-01).. Atovaquone is used in cats for Cytauxzoonosis. Routes documented in cats: PO. A typical adult cat weighs 2.50–7.00 kg. ExoticRx lists 1 cited dose rule for Atovaquone in cats, drawn from published veterinary references. Verify against current literature before clinical use.
US trade names: Mepron
| Route | Dose | Frequency | Duration | Indication | Evidence | Source |
|---|---|---|---|---|---|---|
| PO | 15 mg/kg | q8h | 10 days | Cytauxzoonosis | Weak | Cohn LA, Birkenheuer AJ, Brunker JD, Ratcliff ER, Craig AW. Efficacy of Atovaquone and Azithromycin or Imidocarb Dipropionate in Cats with Acute Cytauxzoonosis. Journal of Veterinary Internal Medicine. 2011;25(1):55-60. doi:10.1111/j.1939-1676.2010.0646.x — Verified against Plumb's Veterinary Drug Handbook, 10th Ed, p.136 (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 mitochondrial electron transport at cytochrome bc1 complex (Complex III) in protozoa. Active against Pneumocystis, Toxoplasma, Babesia.
Must be taken with fatty food for absorption. GI upset common. Often combined with azithromycin for Babesia. Limited veterinary data.
Species-specific contraindications and adverse-reaction reports for cats may differ from canine / feline reference data — consult the primary citations listed with each rule.
Atovaquone dose range in cats, with cited source references: PO 15 mg/kg q8h. Reference ranges from cited sources — verify against current literature before clinical use.
Documented routes for Atovaquone in cats: PO.
Cited course lengths for Atovaquone in cats include: 10 days. Duration depends on the indication — match it to the specific dose rule in the table above.
Atovaquone is indicated in cats for: Cytauxzoonosis.
These are general warnings for Atovaquone across species; consult the cat dosing table above for species-specific guidance. Must be taken with fatty food for absorption. GI upset common. Often combined with azithromycin for Babesia. Limited veterinary data.
Why a species-specific page? Atovaquone 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.