Aspirin for Cat
Cat · Felis catus · typical adult weight 2.50–7.00 kg
Aspirin is used in cat for Anti-platelet (arterial thromboembolism prevention). Routes documented in cat: PO. A typical adult cat weighs 2.50–7.00 kg. ExoticRx lists 1 cited dose rule for Aspirin in cat, drawn from published veterinary references. Verify against current literature before clinical use.
Trade names: Bufferin, Ascriptin
Dose ranges
| Route | Dose | Frequency | Duration | Indication | Evidence | Source |
|---|---|---|---|---|---|---|
| PO | 5 mg/kg | q72h | Long-term | Anti-platelet (arterial thromboembolism prevention) | Moderate | Plumb's Veterinary Drug Handbook, 9th Ed |
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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.
Mechanism of action
Irreversibly acetylates cyclooxygenase (COX-1 and COX-2), inhibiting prostaglandin and thromboxane synthesis.
Side effects & warnings
TOXIC to cats (prolonged half-life, deficient glucuronidation). Use buffered only. GI ulceration. Avoid with other NSAIDs or corticosteroids. Platelet inhibition irreversible.
Species-specific contraindications and adverse-reaction reports for cat may differ from canine / feline reference data — consult the primary citations listed with each rule.
Other Analgesic drugs with cat dosing
Aspirin dosing in other species
Why a species-specific page? Aspirin 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.