WHO naming stem · suffix · former · 7 listed names
-formin
antihyperglycaemics, phenformin derivatives
Where it sits in a name
WHO writes the stem as -formin. So the letters formin sit at the end of the name (…formin).
WHO marks this stem (d): formerly used and no longer formally acknowledged. The names below keep it.
All 7 names WHO lists under -formin
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.
- benfosformin
- buformin
- etoformin
- metformin
- metformin glycinate
- phenformin
- tiformin
Decode another name
Decoded
buformin
Listed INNCarries the WHO stem -formin
- -forminend of the nameWHO lists it hereformer stemWHO definition: antihyperglycaemics, phenformin derivatives
“buformin” is an INN that WHO lists under -formin in the 2024 stem book. A stem marked “former” is one WHO no longer formally acknowledges.
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 -formin (Part II B) and the 7 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.