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Fenbendazole for Cattle

Livestock · Bos taurus · typical adult weight 250.00–900.00 kg

Fenbendazole is used in cattle for GI nematodes, lungworms. Routes documented in cattle: PO. A typical adult cattle weighs 250.00–900.00 kg. ExoticRx lists 1 cited dose rule for Fenbendazole in cattle, drawn from published veterinary references. Verify against current literature before clinical use.

Trade names: Panacur

Dose ranges

RouteDoseFrequencyIndicationEvidenceSource
PO5 mg/kgsingle doseGI nematodes, lungwormsStrongFDA NADA Label

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These ranges are per kg. Enter your cattle's weight to get the precise dose and draw-up volume — unit and concentration math done for you.

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Mechanism of action

Binds to beta-tubulin, inhibiting microtubule polymerization in parasites. Disrupts energy metabolism and cell division.

Side effects & warnings

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 cattle may differ from canine / feline reference data — consult the primary citations listed with each rule.

Other Antiparasitic drugs with cattle dosing

Fenbendazole dosing in other species

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 cattle — 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.