(Pfizer Animal Health
) Spectramast DC is indicated for the treatment of subclinical mastitis in dairy cattle at the time of dry off associated with Staphylococcus aureus, Streptococcus dysgalactiae, and Streptococcus uberis. Each 10 ml tube of Spectramast DC contains the equivalent to 500 mg ceftiofur in a cottonseed oil base. Infuse one tube into each affected quarter at the time of dry off. Ceftiofur.