main menu   -   articles   -   prostate   -   stories   -   sexuality   -   resources   -   glossary   -   search     From Phoenix5's Prostate Cancer Glossary finasteride Definition: (fin-AS-tur-eyed) A 5-alpha-reductase inhibitor used in hormone therapy to stop the conversion of testosterone to dihydrotestosterone. Developed by Merck and sold under the brand name Proscar, it is also the active ingredient in Propecia (made by Merck), for hair loss. The use of Propecia can effect PSA readings. See Merck warning at Propecia. make another selection #s   A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  WXYZ main menu   -   articles   -   prostate   -   stories   -   sexuality   -   resources   -   glossary   -   search The Glossary Booklet   -   The Personal Edition Definitions are provided for education only and are not medical advice. Created exclusively for Phoenix5. © 2002 Phoenix5.