Nitrofurantoin Dosage Calculator

Nitrofurantoin Dosage for Dogs, Cats, Horses By Weight
Trade Names: Macrodantin, Furalan, Furatoin, Furadantin, and generic brands
Functional classification: Antibacterial

Nitrofurantoin Dosing for Dogs, Cats, Horses By Weight

Important Safety Information

Use with caution in animals with renal impairment. Monitor for gastrointestinal side effects.

Do not use in animals with significant renal dysfunction as the drug may not achieve adequate urinary concentrations.

Reference Source

Saunders Handbook of VETERINARY DRUGS, Page 594-595

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Standard Dosage Guidelines

Small Animal Dosage

Species Formulation Dosage Frequency
Dogs & Cats Standard 10 mg/kg/day Divided into four daily treatments, then 1 mg/kg at night PO
Macrocrystalline 2-3 mg/kg q8h PO, followed by 1-2 mg/kg once at nighttime

Large Animal Dosage

Species Route Dosage Frequency
Horses PO 2 mg/kg q8h PO