該款獸藥用于促進豬生長以及飼料在豬體內的轉化率。生產廠商表示，該款獸藥不再生產，因此美國FDA撤銷該款獸藥的許可申請。
部分原文報道如下：
The Food and Drug Administration （FDA） is withdrawing approval of those parts of a new animal drug application （NADA） for a 3-way, fixed-ratio, combination drug Type A medicated article that pertain to use of the procaine penicillin component for production indications in swine. This action is being taken at the sponsor's request because the 3-way Type A medicated article is no longer manufactured.
原文鏈接：https://www.federalregister.gov/documents/2016/09/14/2016-21984/new-animal-drugs-chlortetracycline-procaine-penicillin-and-sulfamethazine-withdrawal-of-approval
