Kloxerate DC (Dry Cow) is an off-white, stable intramammary suspension prepared under sterile conditions. Each single dose 4.5 g syringe contains 500 mg cloxacillin as the benzathine salt in a long acting base with 3% aluminium monostearate.

Benzathine cloxacillin is a semi-synthetic penicillin derived from 6-aminopenicillanic acid.