All of the medicines we carry are NON-PRESCRIPTION fish antibiotics. They are USP grade antibiotics produced by pharmaceutical companies. The Dosages and Strengths and medications are for use in ornamental or pet fish only. Fish Mox, Fish Flex, Fish Zole, Fish Flox,
"All Thomas Labs fish antibiotics have high potency and contain pharmaceutical grade quality ingredients."
WHAT DOES PHARMACEUTICAL GRADE FISH ANTIBIOTICS MEAN? (USP)
"Pharmaceutical Grade is the highest quality substance used, products meeting this grade must be greater than 99% pure, and cannot contain binders, fillers, excipients, dyes or unknown substances." (source: Thomas Labs Product Catalog)