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 & metabolism1,75318.6%
- CCardiovascular system1,31213.9%
- DDermatologicals1,65917.6%
- NNervous system1,05411.2%
- RRespiratory system1,00410.6%
- …Other (9 groups)2,66528.2%
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
- Cabotegravir1 supplier
- Cabozantinib1 supplier
- Cenobamate1 supplier
Thinly supplied
Two or three active suppliers
- Chlophedianol2 suppliers
- Sofosbuvir2 suppliers
- Biotin3 suppliers
- Dolutegravir2 suppliers
- Methionine3 suppliers
- Tetanus Toxoid Vaccine, Inactivated3 suppliers
Broadest supply
Most active suppliers
- Lidocaine511 suppliers
- Dimethicone463 suppliers
- Salicylic Acid452 suppliers
- Oxygen451 suppliers
- Ethanol422 suppliers
- Pramoxine372 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.
