Livestock · Bos taurus · typical adult weight 250.00–900.00 kg
Florfenicol is dosed at 20 mg/kg IM q48h in cattle, per NUFLOR - Florfenicol Injection, Solution [US Product Label]. Intervet Inc.; 2019. https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=c1aeba99-224d-4957-80ec-87212df5dfaf — Verified against Plumb's Veterinary Drug Handbook, 10th Ed, p.556 (2026-08-01).. Florfenicol is used in cattle for Bovine respiratory disease. Routes documented in cattle: IM, SC. A typical adult cattle weighs 250.00–900.00 kg. ExoticRx lists 2 cited dose rules for Florfenicol in cattle, drawn from published veterinary references. Verify against current literature before clinical use.
US trade names: Nuflor, Aquaflor
| Route | Dose | Frequency | Duration | Indication | Evidence | Source |
|---|---|---|---|---|---|---|
| IM | 20 mg/kg | q48h | 2 doses | Bovine respiratory disease | Strong | NUFLOR - Florfenicol Injection, Solution [US Product Label]. Intervet Inc.; 2019. https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=c1aeba99-224d-4957-80ec-87212df5dfaf — Verified against Plumb's Veterinary Drug Handbook, 10th Ed, p.556 (2026-08-01). |
| SC | 40 mg/kg | single dose | — | Bovine respiratory disease | Strong | NUFLOR - Florfenicol Injection, Solution [US Product Label]. Intervet Inc.; 2019. https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=c1aeba99-224d-4957-80ec-87212df5dfaf — Verified against Plumb's Veterinary Drug Handbook, 10th Ed, p.556 (2026-08-01). |
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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.
Binds 50S ribosomal subunit inhibiting peptidyl transferase. Fluorinated analog of chloramphenicol without aplastic anemia risk. Bacteriostatic.
Veterinary-labeled product. Injection site reactions common. Do not use in dairy cattle of breeding age. GI upset possible.
Species-specific contraindications and adverse-reaction reports for cattle may differ from canine / feline reference data — consult the primary citations listed with each rule.
Florfenicol dose ranges in cattle, with cited source references: IM 20 mg/kg q48h; SC 40 mg/kg single dose. Reference ranges from cited sources — verify against current literature before clinical use.
Documented routes for Florfenicol in cattle: IM, SC.
Cited course lengths for Florfenicol in cattle include: 2 doses. Duration depends on the indication — match it to the specific dose rule in the table above.
Florfenicol is indicated in cattle for: Bovine respiratory disease.
These are general warnings for Florfenicol across species; consult the cattle dosing table above for species-specific guidance. Veterinary-labeled product. Injection site reactions common. Do not use in dairy cattle of breeding age. GI upset possible.
Why a species-specific page? Florfenicol 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.