Merck Manual

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Dosages of Tetracyclines

Dosages of Tetracyclines

Tetracycline

Species

Dosage, Route, and Frequency

Tetracycline

Cats, dogs

7 mg/kg, IM or IV, bid

20 mg/kg, PO, tid

Oxytetracycline

Cats, dogs

7 mg/kg, IM or IV, bid

20 mg/kg, PO, tid

Cattle, sheep, pigs

5–10 mg/kg/day, IM or IV

Calves, foals, lambs, piglets

10–20 mg/kg, PO, bid-tid

Horses

5 mg/kg, IV, once to twice daily

Doxycycline

Dogs

5–10 mg/kg/day, PO

5 mg/kg/day, IV

Before heartworm adulticide therapy

10 mg/kg, PO, bid, for 30 days