1-AD is the proprietary name for the pro hormone 5alpha-androst-1-en-3,17-dione. 1-AD has the following properties:
Orally active – greatly suppressed liver deactivation
Converts directly and efficiently to a hormone over 700% more potent than testosterone
Does not aromatize, nor do any of its metabolic products - absolutely no estrogen formation
A naturally occurring endogenous hormone in man