isotretinoin

https://doi.org/10.1351/goldbook.10868

Vitamin A-like medication (13-cis retinoic acid) used, among other things, for acne treatment.

Note: Intake during pregnancy has a high teratogenic risk.

Source:
PAC, 2016, 88, 713. 'Glossary of terms used in developmental and reproductive toxicology (IUPAC Recommendations 2016)' on page 770 (https://doi.org/10.1515/pac-2015-1202)