Cat · Felis catus · typical adult weight 2.50–7.00 kg
Clemastine is used in cat for Allergic dermatitis / pruritus. Routes documented in cat: PO. A typical adult cat weighs 2.50–7.00 kg. ExoticRx lists 1 cited dose rule for Clemastine in cat, drawn from published veterinary references. Verify against current literature before clinical use.
Trade names: Tavist, Dayhist
| Route | Dose | Frequency | Duration | Indication | Evidence | Source |
|---|---|---|---|---|---|---|
| PO | 0.34–0.67 mg per cat | q12h | Long-term; typical dose 0.34-0.67mg per cat BID | Allergic dermatitis / pruritus | Weak | Plumb's Veterinary Drug Handbook, 9th Ed |
Absolute dose ceiling, regardless of body weight: 0.67 mg total (PO).
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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.
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 cat may differ from canine / feline reference data — consult the primary citations listed with each rule.
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 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.