MedlinePlus: Tretinoin
- Information for patients about this medication used to treat acne, sold under brand names including Avita, Renova, and Retin-A. English and Spanish.
- http://www.nlm.nih.gov/medlineplus/druginfo/medmaster/a682437.html

Tretinoin - Retin-A
- Full prescribing information from RxList.
- http://www.rxlist.com/cgi/generic/tretinoin.htm