Horny goat weed extract:Some men use horny goat weed for sexual performance problems including erectile dysfunction (ED) and involuntary ejaculation. It is also used to arouse sexual desire.Horny goat weed contains extract which might help increase blood flow and improve sexual function. It also contains phytoestrogens, chemicals that act somewhat like the female hormone estrogen, that might reduce bone loss in postmenopausal women. Tribulus terrestris:It is a plant from Ayurveda where the root and fruits are used for male virility and general vitality, respectively. The roots enhance libido and sexual well being without affecting testosterone while the fruits appear to be potently protective of organ function.