WHO naming stem · suffix · 28 listed names
-izine
diphenylmethyl piperazine derivatives
Where it sits in a name
WHO writes the stem as -izine. It has 2 spellings or places: izine at the end of the name (…izine); yzine at the end of the name (…yzine).
Of the 28 names WHO lists under it, 27 carry izine at the end of the name, 1 carry yzine at the end of the name.
All 28 names WHO lists under -izine
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.
- belarizine
- benderizine
- buclizine
- buterizine
- cetirizine
- chlorcyclizine
- cinnarizine
- clocinizine
- cyclizine
- decloxizine
- dotarizine
- efletirizine
- elbanizine
- etodroxizine
- flotrenizine
- flunarizine
- homochlorcyclizine
- hydroxyzine
- levocetirizine
- lifarizine
- lomerizine
- pibaxizine
- pipoxizine
- ropizine
- tagorizine
- tamolarizine
- trelnarizine
- trenizine
Decode another name
Decoded
ropizine
Listed INNCarries the WHO stem -izine
- -izineend of the nameWHO lists it hereWHO definition: diphenylmethyl piperazine derivatives
“ropizine” is an INN that WHO lists under -izine 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 -izine (Part II B) and the 28 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.