Cat · Felis catus · typical adult weight 2.50–7.00 kg
Aspirin is dosed at 5 mg/cat (NOT mg/kg) PO q72h in cats, per Plumb's Veterinary Drug Handbook, 10th ed (2023, held copy; the original seed cited the 9th, which was never consulted) — Plumb's 10th ed (held) printed p.100, Aspirin monograph spanning p.100-102; page located 2026-08-05 from the book's own running heads, verified to name the drug in its body text. — SOURCE EDITION: Plumb's Veterinary Drug Handbook — ISBN 9781394172207, https://openlibrary.org/isbn/9781394172207. Aspirin is used in cats for Anti-platelet (arterial thromboembolism prevention). Routes documented in cats: PO. A typical adult cat weighs 2.50–7.00 kg. ExoticRx lists 1 cited dose rule for Aspirin in cats, drawn from published veterinary references. Verify against current literature before clinical use.
US trade names: Bufferin, Ascriptin
| Route | Dose | Frequency | Duration | Indication | Evidence | Source |
|---|---|---|---|---|---|---|
| PO | 5 mg/cat (NOT mg/kg) | q72h | Long-term | Anti-platelet (arterial thromboembolism prevention) | Moderate | Plumb's Veterinary Drug Handbook, 10th ed (2023, held copy; the original seed cited the 9th, which was never consulted) — Plumb's 10th ed (held) printed p.100, Aspirin monograph spanning p.100-102; page located 2026-08-05 from the book's own running heads, verified to name the drug in its body text. — SOURCE EDITION: Plumb's Veterinary Drug Handbook — ISBN 9781394172207, https://openlibrary.org/isbn/9781394172207 |
Every held source for this drug and species, as printed. Where they differ, both are shown — the choice is yours, not ours.
The sources disagree for this combination. The ranges below do not overlap on a comparable route. This is not an error in one of them — published veterinary references differ, and reconciling them for a particular patient is a clinical judgement.
| Dose (mg/animal) | Route | Source | As printed |
|---|---|---|---|
| 80 | PO | Papich Saunders Handbook of Veterinary Drugs, 4th edp.83 | • Typical doses are in the range of • 80 mg/cat q48h PO. Doses have |
| Dose (mg/kg) | Route | Source | As printed |
|---|---|---|---|
| 0.5 | PO | BSAVA Small Animal Formulary, 10th ed — Part A (Canine and Feline)p.49 | k of GI side effects. Some authors suggest a very low dose (0.5 mg/kg p.o. q24h) to inhibit platelet COX without preventing the beneficial effects of prostacyc |
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Irreversibly acetylates cyclooxygenase (COX-1 and COX-2), inhibiting prostaglandin and thromboxane synthesis.
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 cats may differ from canine / feline reference data — consult the primary citations listed with each rule.
Aspirin dose range in cats, with cited source references: PO 5 mg/cat (NOT mg/kg) q72h. Reference ranges from cited sources — verify against current literature before clinical use.
Documented routes for Aspirin in cats: PO.
Cited course lengths for Aspirin in cats include: Long-term. Duration depends on the indication — match it to the specific dose rule in the table above.
Aspirin is indicated in cats for: Anti-platelet (arterial thromboembolism prevention).
These are general warnings for Aspirin across species; consult the cat dosing table above for species-specific guidance. TOXIC to cats (prolonged half-life, deficient glucuronidation). Use buffered only. GI ulceration. Avoid with other NSAIDs or corticosteroids. Platelet inhibition irreversible.
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 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.
| 10 |
| PO |
| Papich Saunders Handbook of Veterinary Drugs, 4th edp.83 |
| 10 mg/kg q24-48h PO. (Convincing 80 mg per cat (one tablet) q72h. No |
| 20–25 | PO | Papich Saunders Handbook of Veterinary Drugs, 4th edp.83 | • 20-25 mg/kg q12h PO. • 10-20 mg/kg q48h PO. |
| 10–20 | PO | Papich Saunders Handbook of Veterinary Drugs, 4th edp.83 | • 20-25 mg/kg q12h PO. • 10-20 mg/kg q48h PO. |
| 1–5 | — | Papich Saunders Handbook of Veterinary Drugs, 4th edp.83 | 1-5 mg/kg, and usually 5-up to ranged from 5 mg per cat q72h, to |
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.