Cat · Felis catus · typical adult weight 2.50–7.00 kg
Phenoxybenzamine is dosed at 0.5–1 mg/kg PO q12h in cats, per BSAVA Small Animal Formulary, 10th ed. (2020), Part A - Canine and Feline, p.318 (PDF 334), Phenoxybenzamine — DOSES, Cats. Phenoxybenzamine is used in cats for Urethral spasm. Routes documented in cats: PO. A typical adult cat weighs 2.50–7.00 kg. ExoticRx lists 1 cited dose rule for Phenoxybenzamine in cats, drawn from published veterinary references. Verify against current literature before clinical use.
US trade names: Dibenzyline
| Route | Dose | Frequency | Duration | Indication | Evidence | Source |
|---|---|---|---|---|---|---|
| PO | 0.5–1 mg/kg | q12h | 5-14 days | Urethral spasm | Moderate | BSAVA Small Animal Formulary, 10th ed. (2020), Part A - Canine and Feline, p.318 (PDF 334), Phenoxybenzamine — DOSES, Cats |
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Irreversible non-selective alpha-adrenergic blocker. Causes long-lasting vasodilation and reduces urethral smooth muscle tone.
Used for pheochromocytoma, urethral spasm, and functional urethral obstruction. Hypotension common. Effects last 3-4 days after stopping (irreversible binding). Nasal congestion.
Species-specific contraindications and adverse-reaction reports for cats may differ from canine / feline reference data — consult the primary citations listed with each rule.
Phenoxybenzamine dose range in cats, with cited source references: PO 0.5–1 mg/kg q12h. Reference ranges from cited sources — verify against current literature before clinical use.
Documented routes for Phenoxybenzamine in cats: PO.
Cited course lengths for Phenoxybenzamine in cats include: 5-14 days. Duration depends on the indication — match it to the specific dose rule in the table above.
Phenoxybenzamine is indicated in cats for: Urethral spasm.
These are general warnings for Phenoxybenzamine across species; consult the cat dosing table above for species-specific guidance. Used for pheochromocytoma, urethral spasm, and functional urethral obstruction. Hypotension common. Effects last 3-4 days after stopping (irreversible binding). Nasal congestion.
Why a species-specific page? Phenoxybenzamine 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.