Dog · Canis lupus familiaris · typical adult weight 2.00–80.00 kg
Norfloxacin is dosed at 22 mg/kg PO q12h in dogs, per Papich, Saunders Handbook of Veterinary Drugs 4th ed, Norfloxacin monograph, printed p.573: "Use in animals (and doses) is based on pharmacokinetic studies in experimental animals, experience in people, or anecdotal experience in animals." — Verified against Papich/Saunders Handbook of Veterinary Drugs, 4th Ed, p.601 (2026-08-01).. Norfloxacin is used in dogs for Urinary tract infections. Routes documented in dogs: PO. A typical adult dog weighs 2.00–80.00 kg. ExoticRx lists 1 cited dose rule for Norfloxacin in dogs, drawn from published veterinary references. Verify against current literature before clinical use.
US trade names: Noroxin
| Route | Dose | Frequency | Duration | Indication | Evidence | Source |
|---|---|---|---|---|---|---|
| PO | 22 mg/kg | q12h | 7-14 days | Urinary tract infections | Weak | Papich, Saunders Handbook of Veterinary Drugs 4th ed, Norfloxacin monograph, printed p.573: "Use in animals (and doses) is based on pharmacokinetic studies in experimental animals, experience in people, or anecdotal experience in animals." — Verified against Papich/Saunders Handbook of Veterinary Drugs, 4th Ed, p.601 (2026-08-01). |
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These ranges are per kg. Enter your dog's weight to get the precise dose and draw-up volume — unit and concentration math done for you.
Inhibits DNA gyrase. Early fluoroquinolone with limited systemic distribution. Concentrates in urinary tract.
Limited veterinary use. Primarily for urinary tract infections. Avoid in young animals. Superseded by newer fluoroquinolones.
Species-specific contraindications and adverse-reaction reports for dogs may differ from canine / feline reference data — consult the primary citations listed with each rule.
Norfloxacin dose range in dogs, with cited source references: PO 22 mg/kg q12h. Reference ranges from cited sources — verify against current literature before clinical use.
Documented routes for Norfloxacin in dogs: PO.
Cited course lengths for Norfloxacin in dogs include: 7-14 days. Duration depends on the indication — match it to the specific dose rule in the table above.
Norfloxacin is indicated in dogs for: Urinary tract infections.
These are general warnings for Norfloxacin across species; consult the dog dosing table above for species-specific guidance. Limited veterinary use. Primarily for urinary tract infections. Avoid in young animals. Superseded by newer fluoroquinolones.
Why a species-specific page? Norfloxacin pharmacokinetics differ across species: dose ranges, intervals, and route preferences are not interchangeable. Cross-extrapolation from canine doses is unsafe in dogs — 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.