Kaempferia parviflora is native to Thailand – also known as Thai Ginseng, Krachai Dum or Krachai Dam. It is popular in traditional Thai medicine and also among Muay Thai fighters because it gives the fighters muscle strength and endurance. Due to its aphrodisiac effect, Black Ginger is also known as the “Natural Viagra”. Black Ginger can increase blood supply particularly in the penis’ erectile chambers, ensuring longer lasting and harder erections.