Cefapirin is a broad-spectrum mastitis treatment for dairy cows at dry-off. This intramammary antibiotic is highly effective in the treatment of Streptococcus agalactiae and Staphylococcus aureus, including penicillin-resistant strains. Indicated for the treatment of subacute and chronic endometritis in cows (at least 14 days after parturition) caused by bacteria sensitive to cephapirin.