The raw material of Herbal Viogra is purely natural plants. It could be easily absorbed as well as to improve sexual function, decrease the periods of the cease of sexual activity, restrain premature ejaculation. It not only can increase the ejaculation quantity by 500% but also can make you feel more rigid, energetic and stronger when you have an erection. You will be more free to ejaculate and can enjoy the pleasure willfully. It can improve the force of ejaculation and extend the time of sexual intercourse to above ten times (it can extend the time of sexual intercourse from previous a few minutes to tens of minutes, even more than an hour). You will have a strong sexual pleasure and will fulfill your desire and orgasm. It is free of toxicity and dependence. There will not be the reactions such as anaesthesia, ache, blush, quick heartbeat, nausea and headache and so on.