Pro Virility Caps by Labophyto help to naturally increase your testosterone levels. Pro Virility Caps are a 3 month treatment to develop virility, including the development of muscles, hormones and better erections. Your sex appeal will increase as the treatment progresses. Pro Virility Caps contains the following active ingredients: Tribulus can help increase the body's testosterone levels and improve erectile function. | Guggul helps you to maintain proper prostate function. | Vitamin B6 helps to reduce fatigue.