Contains 300,000 units of procaine G penicillin per mL. Sterile solution of penicillin G procaine in a ready to use aqueous suspension for effective protection against organisms susceptible to penicillin. Labeled for IM use in cattle, swine, sheep, and horses. Not for use in horses intended for food or in calves to be processed for veal. 48-hour milk withdrawal. Cattle: 10 day slaughter withdrawal; sheep: 9 day slaughter withdrawal; swine: 7 day slaughter withdrawal. Available in 100 mL or 250 mL sizes. Note: This item is a refrigerated pharmaceutical. Please see our Shipping page for important information.