excuse me for interrupting but as

far as i know

androstadienone
is phohibited in some countries
because it's impact on health
liver

damage for example

Androstenedione is banned by the Food and Drug Administration (FDA). It has been used to

increase muscle mass, improve strength, improve athletic performance, and increase testosterone (male sex hormone)

as an alternative to anabolic steroids.
Possible side effects of androstenedione include liver damage,

development of breast tissue in men, menstrual disturbances, hair loss, deepened voice, acne and infertility