While this directive applied to food-producing livestock, there was no rule against access to antibiotics used in the pet trade, specifically those targeting aquarium fish or pet birds. Despite this, the writing was on the wall; large distributors like Thomas Labs, maker of “Fish-Mox,” quietly ended their line of products. Other producers rose to fill the void, but the selection was less and availability less reliable.
Recently, the FDA issued Industry Guidance #263, a ruling that all remaining over-the-counter “medically-important” veterinary antibiotics should be “transitioned” to prescription-only by June 2023. Product labels will now state: “Caution: Federal law restricts this drug to use by or on the order of a licensed veterinarian.”
