Minox increases blood flow which accelerates the hair growth.  When you stop using it, most guys loose the hair they gained.  Biotin does not help beard development but if your body's supply is low, it can improve the quality of existing. hair. You really just need time and patience... you do not need either drug.

Library Central of Beard Growing... new beard growers check out Starting and Accepting sections

Beard Board Essentials Library... learn all about Rules, Posting, Pictures and much more

My personal beard journey