MSD Manual

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Dosages of Macrolides

Dosages of Macrolides

Macrolide

Species

Dosage, Route, and Frequency

Notes

Erythromycin

Beef cattle

No approved veterinary erythromycin products are available in the US

Cats

15 mg/kg, PO, q 8 h

ELDU

Foals

20–25 mg/kg, PO, q 6–8 h using erythromycin base or estolate products

Do not use in adult horses

Tylosin

Cattle

17.6 mg/kg, IM, q 24 h for up to 5 days

Pigs

8.8 mg/kg, IM, q 12 h for up to 3 days

Dogs, cats

6–20 mg/kg, PO, q 8–24 h

ELDU

Honeybees

200 mg/hive, q 7 d for 3 wk

Tilmicosin

Beef cattle

Dairy cattle < 20 mo

10–20 mg/kg, SC, once

Accidental self-injection can be fatal to humans

Sheep

10 mg/kg, SC, once

Tulathromycin

Cattle

2.5 mg/kg, SC, once

Swine

2.5 mg/kg, IM, once

Gamithromycin

Beef cattle

Dairy cattle < 20 mo

6 mg/kg, SC, once

Tildipirosin

Beef cattle

Dairy cattle < 20 mo

4 mg/kg, SC, once

Azithromycin

Dogs

5–12 mg/kg, PO, q 24 h

Off-label

Cats

5–15 mg/kg, PO, q 24 h

Off-label

Foals

10 mg/kg, PO, q 24 h usually in combination with rifampin at 5 mg/kg, PO, q 12 h

Off-label; Do not use in adult horses

Clarithromycin

Foals

5–7.5 mg/kg, PO, q 12 h

Off-label; Do not use in adult horses

Dogs

5-10 mg/kg, PO, q 12 h

Cats

7.5 mg/kg, PO, q 12 h

Clindamycin

Dogs

5-10 mg/kg, PO, q 12 h

Cats

7.5 mg/kg, PO, q 12 h

ELDU, extralabel drug use