Section 526.363 - Cephapirin benzathine(a)Specifications. Each single-dose, 10-milliliter syringe contains 300 milligrams cephapirin activity (as cephapirin benzathine).(b)Sponsor. See No. 000010 in § 510.600(c) of this chapter.(c)Related tolerances. See § 556.115 of this chapter.(d)Conditions of use in dry cows -(1)Amount. Infuse the contents of one syringe (300 mg cephapirin activity) into each quarter following last milking, but no later than 30 days before calving.(2)Indications for use. For the treatment of mastitis caused by susceptible strains of Streptococcus agalactiae and Staphylococcus aureus, including penicillin-resistant strains.(3)Limitations. For use in dry cows only. Not to be used within 30 days of calving. Milk from treated cows must not be used for food during the first 72 hours after calving. Animals infused with this product must not be slaughtered for food until 42 days after the latest infusion. Federal law restricts this drug to use by or on the order of a licensed veterinarian.43 FR 37174, Aug. 22, 1978, as amended at 53 FR 27851, July 25, 1988; 73 FR 12262 , Mar. 7, 2008; 75 FR 10168 , Mar. 5, 2010; 76 FR 17338 , Mar. 29, 2011; 86 FR 13186 , Mar. 8, 2021; 88 FR 16549 , Mar. 20, 2023 86 FR 13186, 3/8/2021; 88 FR 16549, 3/20/2023