thisdrug what a medicine's name tells you

WHO naming stem · prefix · 51 listed names

sulfa-

anti-infectives, sulfonamides

WHO's definition, quoted as written in the 2024 stem book
Names only. This page is about sulfa- as a part of a name. It has nothing on uses, doses, side effects or interactions of any medicine that carries it, and nothing here is medical advice. Ask a pharmacist or doctor about the medicine itself.

Where it sits in a name

WHO writes the stem as sulfa-. So the letters sulfa sit at the start of the name (sulfa…).

All 51 names WHO lists under sulfa-

These are the INN in group (a) of Part IV of the stem book: names in which WHO says the stem is used as defined. The stem is marked where WHO places it. A-Z as WHO lists them.

  1. sulfabenz
  2. sulfabenzamide
  3. sulfacarbamide
  4. sulfacecole
  5. sulfacetamide
  6. sulfachlorpyridazine
  7. sulfachrysoidine
  8. sulfacitine
  9. sulfaclomide
  10. sulfaclorazole
  11. sulfaclozine
  12. sulfadiasulfone sodium
  13. sulfadiazine
  14. sulfadiazine sodium
  15. sulfadicramide
  16. sulfadimethoxine
  17. sulfadimidine
  18. sulfadoxine
  19. sulfaethidole
  20. sulfafurazole
  21. sulfaguanidine
  22. sulfaguanole
  23. sulfalene
  24. sulfaloxic acid
  25. sulfamazone
  26. sulfamerazine
  27. sulfamerazine sodium
  28. sulfamethizole
  29. sulfamethoxazole
  30. sulfamethoxypyridazine
  31. sulfametomidine
  32. sulfametoxydiazine
  33. sulfametrole
  34. sulfamonomethoxine
  35. sulfamoxole
  36. sulfanilamide
  37. sulfanitran
  38. sulfaperin
  39. sulfaphenazole
  40. sulfaproxyline
  41. sulfapyrazole
  42. sulfapyridine
  43. sulfaquinoxaline
  44. sulfasalazine
  45. sulfasomizole
  46. sulfasuccinamide
  47. sulfasymazine
  48. sulfathiazole
  49. sulfatolamide
  50. sulfatroxazole
  51. sulfatrozole

Decode another name

Decoded

sulfabenz

Listed INNCarries the WHO stem sulfa-

  • sulfa-start of the nameWHO lists it hereWHO definition: anti-infectives, sulfonamides

“sulfabenz” is an INN that WHO lists under sulfa- in the 2024 stem book.

The same decoder as the front page: it reads the letters of a name against all 482 WHO stems, in your browser.

Source and licence

The definition of sulfa- (Part II B) and the 51 names (Part IV, group (a)) are from Use of stems in the selection of International Nonproprietary Names (INN) for pharmaceutical substances, 2024 (World Health Organization, Stem book 2024 (ISBN 978-92-4-009938-8); covers proposed INN Lists 1-129). Checked .

Adapted from: Use of stems in the selection of International Nonproprietary Names (INN) for pharmaceutical substances, 2024. Geneva: World Health Organization; 2024. Licence: CC BY-NC-SA 3.0 IGO. This adaptation was not created by WHO; WHO is not responsible for its content or accuracy and does not endorse this site. The data file stems.json is shared under the same licence.