Today Mastitis treatment 10ML SYR DOZ, for lactating cows is effective against both gram-positive and gram-negative bacteria, especially Strept agalactiae and Staph aureus. Each 10 ml syringe contains 200 mg cephapirin activity as cephapirin sodium. 96 hour milk withholding; 4 day slaughter withdrawal. IMPORTANT : NOT AVAILABLE FOR SALE TO OR DELIVERY TO CALIFORNIA RESIDENTS