Merck Manual

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Drug Withdrawal and Milk Discard Times of Cephalosporins

Drug Withdrawal and Milk Discard Times of Cephalosporins

Cephalosporin

Withdrawal Time

Milk Discard Time

Ceftiofur

2–16 days, depending on formulation

Sodium cephapirin (intramammary)

4 days before slaughter

4 days

Benzathine cephapirin (dry-cow treatment)

42 days after latest infusion

3 days after calving—milk not used for food