Cat · Felis catus · typical adult weight 2.50–7.00 kg
Ethosuximide is used in cat for Absence-type seizures. Routes documented in cat: PO. A typical adult cat weighs 2.50–7.00 kg. ExoticRx lists 1 cited dose rule for Ethosuximide in cat, drawn from published veterinary references. Verify against current literature before clinical use.
Trade names: Zarontin
| Route | Dose | Frequency | Duration | Indication | Evidence | Source |
|---|---|---|---|---|---|---|
| PO | 10–20 mg/kg | q12h | Chronic use | Absence-type seizures | Anecdotal | Plumb's Veterinary Drug Handbook, 9th Ed |
Need the exact dose for your patient?
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.
Reduces low-threshold T-type calcium currents in thalamic neurons, suppressing the thalamocortical spike-wave discharge underlying absence seizures.
Specific for absence seizures only — not effective for generalized tonic-clonic seizures. GI upset common. Blood dyscrasias rare. Very limited veterinary use.
Species-specific contraindications and adverse-reaction reports for cat may differ from canine / feline reference data — consult the primary citations listed with each rule.
Why a species-specific page? Ethosuximide pharmacokinetics differ across species: dose ranges, intervals, and route preferences are not interchangeable. Cross-extrapolation from canine doses is unsafe in cat — 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.