thisdrug what a medicine's name tells you

WHO naming stem · suffix · 19 listed names

-apine

tricyclic compounds

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

All 19 names WHO lists under -apine

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. amoxapine
  2. asenapine
  3. batelapine
  4. clotiapine
  5. clozapine
  6. esmirtazapine
  7. flumezapine
  8. fluperlapine
  9. loxapine
  10. metiapine
  11. mirtazapine
  12. olanzapine
  13. pentiapine
  14. perlapine
  15. quetiapine
  16. rilapine
  17. serazapine
  18. tenilapine
  19. zicronapine

Decode another name

Decoded

loxapine

Listed INNCarries 2 WHO stems, most specific first: -apine …

  • -apineend of the nameWHO lists it hereWHO definition: tricyclic compounds
  • -pin(e)end of the nameWHO lists it hereWHO definition: tricyclic compounds

“loxapine” is an INN that WHO lists under -apine, -pin(e) 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 -apine (Part II B) and the 19 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.