Liquamycin La-200 - 100ml Pfizer Animal Health Approved for 96 hour milkout. Long-lasting broad-spectrum antibiotic for the treatment of a wide range of diseases caused by susceptible gram-positive and gram-negative bacteria. For use in beef and dairy cattle and swine. Provides therapeutic blood levels for 3 days. Give 4.5 ml per 100 pounds IM or SQ in the neck.