Directory
Therapeutic classes
Every ATC-classified active substance on file - all of them, A to Z. Each class groups a substance's dosage forms and routes with combined US supplier counts, grouped from individual drug concepts via RxNorm.
Directory mix
Where the classes sit
Every drug concept below, grouped by the first level of its ATC code - the anatomical system the substance acts on.
- AAlimentary tract & metabolism1,75219.0%
- CCardiovascular system1,41915.4%
- DDermatologicals1,53416.6%
- NNervous system1,07611.7%
- RRespiratory system7858.5%
- …Other (9 groups)2,65328.8%
ATC level 1 (anatomical main group), in ATC's own letter order - the five largest groups, then everything else. Shares are of the classified concepts in this directory; concepts with no ATC code on file, mostly OTC-monograph and bulk ingredients, are not in the directory and not in this chart.
Supply concentration watch
Methodology →Single point of failure
One active US supplier
- Ivacaftor1 supplier
- Risankizumab1 supplier
- Alpelisib1 supplier
- Cabozantinib1 supplier
- Cenobamate1 supplier
- Deutetrabenazine1 supplier
Thinly supplied
Two or three active suppliers
- Chlophedianol3 suppliers
- Sofosbuvir2 suppliers
- Brompheniramine3 suppliers
- Hexylresorcinol2 suppliers
- Interferon Beta-1a2 suppliers
- Methionine2 suppliers
Broadest supply
Most active suppliers
- Lidocaine485 suppliers
- Dimethicone462 suppliers
- Oxygen450 suppliers
- Salicylic Acid428 suppliers
- Ethanol421 suppliers
- Benzalkonium346 suppliers
Classes group drug concepts sharing one ATC level-5 code, labeled with the substance's international nonproprietary name. Supplier counts are canonical entities - name variants of one company count once. Substances with a single active US supplier are flagged; see the methodology for how concentration is computed.
