On June 11th, 2021, The Food and Drug Administration (FDA) finalized a Guidance for Industry (GFI) #263, which outlines the process for animal drug manufacturers to change all remaining antibiotic formulations used in animal health care from over-the-counter (OTC) to prescription status. Products commonly used by beef producers such as injectable penicillin and oxytetracycline (for example, LA300) will no longer be available without a prescription from a veterinarian as of June 2023.
Specifically, all dosage forms of medically important antimicrobials approved for use in animals will…
