Glossary · Terminology
ATC
Anatomical Therapeutic Chemical classification
ATC is the WHO classification of medicines by active substance, in five levels from the organ system (A, alimentary tract) down to the chemical substance (A10BA02, metformin).
It is international and free, which makes it the usual substance code outside the US; it does not identify a specific product, strength or pack.
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Definitions written by Anpheros from the official sources linked on each page. General information about standards and regulation, not legal or medical advice. All terms →