What up M19?
I got this from another site during a search:
I have looked into this supplement and here's my guess:
17-HD is essentially 100 mgs of DHEA with Licorice Root - Glycyrrhiza glabra.
The DHEA is giving you the energy rush in the gym (which fades with continuous use) and the Licorice root (Glabra) is adding the the energy boost by raising your blood pressure.
If the Glabra they list on the label is really Licorice root it's kind of funny as licorice root has be shown to lower testosterone.
Dhea will increase Free Testosterone (which is the product's claim to fame
Hope this sheds some light.