was reading the news on my phone when i came along this article about the yarsagumba fungus. Thought some may find this interesting. I would be curious to see its efficacy. Sounds kind of gross though the way it is "born" but i guess magics grow in turd and people eat them(rebels)
http://bigpondnews.com/articles/OddSpot/2012/08/01/Rare_fungus_enhance_sexual_prowess_778122.html