Cat · Felis catus · typical adult weight 2.50–7.00 kg
Clemastine is dosed at 0.34–0.67 mg per cat PO q12h in cats, per Miller WH, Scott DW. Clemastine fumarate as an antipruritic agent in pruritic cats - results of an open clinical-trial. Canadian Veterinary Journal-Revue Veterinaire Canadienne. 1994;35:502-504. — Verified against Plumb's Veterinary Drug Handbook, 10th Ed, p.307 (2026-08-01). — Plumb's 10th ed (held) printed p.279, Clemastine monograph; 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. Clemastine is used in cats for Allergic dermatitis / pruritus. Routes documented in cats: PO. A typical adult cat weighs 2.50–7.00 kg. ExoticRx lists 1 cited dose rule for Clemastine in cats, drawn from published veterinary references. Verify against current literature before clinical use.
US trade names: Tavist, Dayhist
| Route | Dose | Frequency | Duration | Indication | Evidence | Source |
|---|---|---|---|---|---|---|
| PO | 0.34–0.67 mg per catmax 0.67 mg total | q12h | Long-term; typical dose 0.34-0.67mg per cat BID | Allergic dermatitis / pruritus | Weak | Miller WH, Scott DW. Clemastine fumarate as an antipruritic agent in pruritic cats - results of an open clinical-trial. Canadian Veterinary Journal-Revue Veterinaire Canadienne. 1994;35:502-504. — Verified against Plumb's Veterinary Drug Handbook, 10th Ed, p.307 (2026-08-01). — Plumb's 10th ed (held) printed p.279, Clemastine monograph; 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.
| Dose (mg/kg) | Route | Source | As printed |
|---|---|---|---|
| 0.1 | PO | BSAVA Small Animal Formulary, 10th ed — Part A (Canine and Feline)p.106 | 0.1 mg/kg p.o. q12h. BSAVA Small Animal Formulary 10th edition: Part A - Canine and Feli |
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.
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Competitive H1 histamine receptor antagonist that blocks histamine-mediated allergic responses including pruritus, urticaria, and rhinitis.
Sedation is common. Anticholinergic effects (dry mouth, urinary retention). May be more effective than diphenhydramine for canine atopic dermatitis.
Species-specific contraindications and adverse-reaction reports for cats may differ from canine / feline reference data — consult the primary citations listed with each rule.
Clemastine dose range in cats, with cited source references: PO 0.34–0.67 mg per cat q12h. Reference ranges from cited sources — verify against current literature before clinical use.
Documented routes for Clemastine in cats: PO.
Cited course lengths for Clemastine in cats include: Long-term; typical dose 0.34-0.67mg per cat BID. Duration depends on the indication — match it to the specific dose rule in the table above.
Clemastine is indicated in cats for: Allergic dermatitis / pruritus.
These are general warnings for Clemastine across species; consult the cat dosing table above for species-specific guidance. Sedation is common. Anticholinergic effects (dry mouth, urinary retention). May be more effective than diphenhydramine for canine atopic dermatitis.
Why a species-specific page? Clemastine 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.