Muira Puama, also known as "potency wood", has been used for centuries by the indigenous people of the Brazillian Rainforests as an aid to sexuality for men and women alike. To this day, this purely natural extract is a best seller the world after to those who wish to improve circulation in their sensitive bits - simply add fifteen drops to a drink two or three times a day; you should notice a change after 2-3 weeks.