Worked @ GNC years ago and used to sell a lot of their sexual health pills, mostly combo's of herbs like horny goat weed, tribulis testis, yohimbe, etc. NOT those penis enlargment crap, but these just claim to provide longer, harder, erections and improve overall sexual health. Never worked up the nerve to try them out, even though I tried almost all the supps we had. Has anyone ever used any of these herbs? if so any results?