Allopurinol Dosage Calculator

Allopurinol Dosage for Dogs and Horses By Weight
Trade Names: Lopurin, Zyloprim, Allopur (Europe)
Functional classification: Anti-inflammatory

Allopurinol Dosing for Dogs and Horses By Weight

Important Safety Information

For leishmaniasis treatment in dogs, some clinicians use 15 mg/kg q12h initially, then reduce to 7-10 mg/kg q12-24h PO if there is a response.

Monitor liver and kidney function during long-term therapy.

Reference Source

Saunders Handbook of VETERINARY DRUGS, Page 45-46

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Standard Dosage Guidelines

Small Animal Dosage

Species Route Dosage Frequency
Dogs PO 10 mg/kg q8h (urate urolith prevention)
PO 10 mg/kg q12h (leishmaniasis)

Large Animal Dosage

Species Route Dosage Frequency
Horses PO 5 mg/kg As prescribed

Additional Information

For Leishmaniasis in Dogs: Administer 10 mg/kg q12h PO for at least 4 months and as long as 6 months. Some clinicians use 15 mg/kg q12h initially, then reduce to 7-10 mg/kg q12-24h PO if there is a response.

For Urate Urolith Prevention in Dogs: Start with 10 mg/kg q8h PO, then reduce to 10 mg/kg q24h PO.