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WHO naming stem · suffix · 41 listed names

-ac

anti-inflammatory agents, ibufenac derivatives

WHO's definition, quoted as written in the 2024 stem book
Names only. This page is about -ac 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 -ac. So the letters ac sit at the end of the name (…ac).

All 41 names WHO lists under -ac

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. aceclofenac
  2. alclofenac
  3. amfenac
  4. anirolac
  5. bendazac
  6. bromfenac
  7. bufezolac
  8. cinfenoac
  9. clidanac
  10. clofurac
  11. clopirac
  12. dexpemedolac
  13. diclofenac
  14. diclofenac etalhyaluronate
  15. eltenac
  16. etodolac
  17. felbinac
  18. fenclofenac
  19. fenclorac
  20. fentiazac
  21. furofenac
  22. ibufenac
  23. isofezolac
  24. isoxepac
  25. ketorolac
  26. lexofenac
  27. lonazolac
  28. mofezolac
  29. nepafenac
  30. oxepinac
  31. oxindanac
  32. pemedolac
  33. pirazolac
  34. rovazolac
  35. sulindac
  36. tianafac
  37. tifurac
  38. tiopinac
  39. trifezolac
  40. zenuzolac
  41. zomepirac

Decode another name

Decoded

amfenac

Listed INNCarries the WHO stem -ac

  • -acend of the nameWHO lists it hereWHO definition: anti-inflammatory agents, ibufenac derivatives

“amfenac” is an INN that WHO lists under -ac 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 -ac (Part II B) and the 41 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.