Cat · Felis catus · typical adult weight 2.50–7.00 kg
Fenbendazole is dosed at 50 mg/kg PO q24h in cats, per PANACUR - Small Animal 10% Oral Suspension [UK Product Label for Dogs and Cats]. MSD Animal Health; 2021. https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=859d4e30-d70c-4baf-aa62-0d3feff25057 — Verified against Plumb's Veterinary Drug Handbook, 10th Ed, p.533 (2026-08-01).. Fenbendazole is used in cats for Aelurostrongylus (lungworm), Giardia, Roundworms, hookworms, lung worms. Routes documented in cats: PO. A typical adult cat weighs 2.50–7.00 kg. ExoticRx lists 3 cited dose rules for Fenbendazole in cats, drawn from published veterinary references. Verify against current literature before clinical use.
US trade names: Panacur
| Route | Dose | Frequency | Duration | Indication | Evidence | Source |
|---|---|---|---|---|---|---|
| PO | 50 mg/kg | q24h | 10-14 days for lungworm | Aelurostrongylus (lungworm) | Moderate | PANACUR - Small Animal 10% Oral Suspension [UK Product Label for Dogs and Cats]. MSD Animal Health; 2021. https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=859d4e30-d70c-4baf-aa62-0d3feff25057 — Verified against Plumb's Veterinary Drug Handbook, 10th Ed, p.533 (2026-08-01). |
| PO | 50 mg/kg | q24h | 5 consecutive days | Giardia | Strong | PANACUR - Small Animal 10% Oral Suspension [UK Product Label for Dogs and Cats]. MSD Animal Health; 2021. https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=859d4e30-d70c-4baf-aa62-0d3feff25057 — Verified against Plumb's Veterinary Drug Handbook, 10th Ed, p.533 (2026-08-01). |
| PO | 50 mg/kg | q24h | 3-5 consecutive days | Roundworms, hookworms, lung worms | Strong | Gruffydd-Jones T, Addie D, Belak S, et al. Giardiasis in cats: ABCD guidelines on prevention and management. J Feline Med Surg. 2013;15(7):650-652. PMID: 23813834 — Verified against Plumb's Veterinary Drug Handbook, 10th Ed, p.533 (2026-08-01). |
Need the exact dose for your patient?
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.
Binds to beta-tubulin, inhibiting microtubule polymerization in parasites. Disrupts energy metabolism and cell division.
Very wide safety margin. Rarely causes vomiting or diarrhea. Safe in pregnant animals at standard doses. Must be given for multiple consecutive days for efficacy.
Species-specific contraindications and adverse-reaction reports for cats may differ from canine / feline reference data — consult the primary citations listed with each rule.
Fenbendazole dose ranges in cats, with cited source references: PO 50 mg/kg q24h; PO 50 mg/kg q24h; PO 50 mg/kg q24h. Reference ranges from cited sources — verify against current literature before clinical use.
Documented routes for Fenbendazole in cats: PO.
Cited course lengths for Fenbendazole in cats include: 10-14 days for lungworm; 5 consecutive days; 3-5 consecutive days. Duration depends on the indication — match it to the specific dose rule in the table above.
Fenbendazole is indicated in cats for: Aelurostrongylus (lungworm), Giardia, Roundworms, hookworms, lung worms.
These are general warnings for Fenbendazole across species; consult the cat dosing table above for species-specific guidance. Very wide safety margin. Rarely causes vomiting or diarrhea. Safe in pregnant animals at standard doses. Must be given for multiple consecutive days for efficacy.
Why a species-specific page? Fenbendazole 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.