Finasteride Is Made From Progesterone. Should We Be Worried ?

[Valast1942]

Antineoplastic Drugs: Organic Syntheses
books.google.co.uk/books?isbn=1118892542
Daniel Lednicer - 2015 - ‎Medical

The starting material for the synthesis of finasteride is progesterone (20.1), a molecule that incorporates the requisite nucleus with the proper stereochemistr................

Does this make propecia similar to progesterone ?

 

[IdealForehead]

Estrogen is made from testosterone.

https://www.ucsf.edu/news/2009/10/8199/estrogen-plays-key-role-male-brain-development

Should we be worried about having testosterone in our bodies as a result?

(The answer is no.)