yeah there are steroid-analoga in plants. Fenugreek (Bockshornklee), Tribulus terrestris (Burzeldorn), Horny Goat Weed (Elfenblume) and one can use other supportive Plants like Ginger, Ashwaganda (which cointain substances which counter "Stresshormone" - cortisol and are a source for micro nutirents. Zink is imporatant for Testo. Normal Zink works as well on increasing testo-level), Maca. Studies show that it is enaugh to increase bodies own testo production. Of course you dont get it that easy through the Blood-Brain-Barrier. Maybe a gel...the problem with oral Hormone sis the first-pass in the liver which deactivates most of it, but its enaugh to get some effects.