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Merck Manual
Veterinary Manual
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Drug Withdrawal and Milk Discard Times of Macrolides

Drug Withdrawal and Milk Discard Times of Macrolides

Macrolide

Species

Withdrawal Time (days)

Milk Discard Time (hr)

Erythromycin

Cattle

14

36–72

Pigs

7

Tylosin

Cattle

21

96

Pigs

14

Tilmicosin

Cattle

28

0

Tulathromycin

Cattle

18

Swine

5

Gamithromycin

Cattle

63a

a EU withdrawal; withdrawal period for USA (35 days) pending; withdrawal period for Canada is 49 days.

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Merck & Co., Inc., Kenilworth, NJ, USA is a global healthcare leader working to help the world be well. From developing new therapies that treat and prevent disease to helping people in need, we are committed to improving health and well-being around the world.  The Merck Veterinary Manual was first published in 1955 as a service to the community.  The legacy of this great resource continues as the Merck Veterinary Manual in the US and Canada and the MSD Manual outside of North America.

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