Today/Cefa-Lak Mastitis Tubes Cephapirin Sodium 12 tubes/box Udder infusion containing the drug cephapirin sodium for treatment of bovine mastitis in lactating cows. Treatment consists of using two syringes, 12 hours apart. Milk from treated animal taken during treatment must not be used for food for 96 hours. Udder infusion containing the drug cephapirin sodium for treatment of bovine mastitis in lactating cows. Treatment consists of using two syringes, 12 hours apart. Milk from treated animal taken during treatment must not be used for food for 96 hours after last treatment. Size: 10 MILLILITER