Spinosad Dosage Calculator

Spinosad Dosage for Dogs and Cats By Weight
Trade Names: Comfortis, Trifexis (with milbemycin)
Functional classification: Antiparasitic

Spinosad Dosing for Dogs and Cats By Weight

Important Safety Information

For dogs: 30 mg/kg (13.5 mg/lb) PO administered once per month.

For cats: 50-100 mg/kg PO once per month. The approved dose in some countries for cats is 50 mg/kg once per month.

No dose has been reported for large animals.

Reference Source

Saunders Handbook of VETERINARY DRUGS, Page 764-765

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Standard Dosage Guidelines

Small Animal Dosage

Species Route Dosage Frequency
Dogs PO 30 mg/kg Once per month
Cats PO 50-100 mg/kg Once per month

Large Animal Dosage

Species Route Dosage Frequency
No dose has been reported for large animals