Stamina Rx (Stamina-Rx) is a revolutionary sexual stimulant engineered to increase sexual stamina and arousal. Unlike the competition, HI-TECH uses only the highest grade extracts and nutriceuticals available. Stamina-Rx (Stamina Rx) uses TWO proprietary components not found anywhere else in America, which are: 1. Xanthoparmelia Scabrosa: It induces smooth muscle relaxation, allowing for maximum arterial dilation and increased bloodflow. 2. Cnidium Monnier: It increases nitric oxide release and inhibits PDE-5, allowing erections to be sustained for longer periods of time.