ExoticRx · exoticrx.com/drugs/norfloxacin
US brand names:Noroxin
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).. Verify against current literature before clinical use.
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 Superseded by newer fluoroquinolones.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 references:All Dog (Domestic) drugs
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A dog/cat sample is shown here. Cited dosing for all 1 species — reptiles, birds, pocket pets, livestock, and equine — is free on the per-species pages above. Pro adds the weight-based calculator for every species.
| Species | Route | Dose | Frequency | Evidence | Source |
|---|---|---|---|---|---|
| Dog (Domestic) | PO | 22 mg/kg | q12h | 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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