Metricure by Merck is a benzathine cephapirin uterine suspension formulated for cattle. This veterinary prescription cattle antibiotic comes in a convenient 12-pack of prefilled 19 g syringes to support intrauterine administration by your veterinarian. Each syringe delivers 640 mg of cephapirin in a ready-to-use suspension. DIN 02237680. A reliable choice within livestock health products for farms seeking a veterinarian-directed intrauterine antibiotic option.