Long Jack ( Tongkat Ali, Malaysian Ginseng )
Malaysian Ginseng, Long Jack, Tongkat ali, or Eurycoma longifolia jack, is a tree native to Malaysia and Indonesia where its roots have been used for medicinal purposes for thousands of years. Malaysian Ginseng has the ability to boost testosterone and appears to increase sexual function in males. One study indicates that it can increase sperm production. It is helpful for Malaria, and although research is ongoing, it is being studied for possible anti-cancer properties.