Tongkat Ali, also known as Eurycoma Longifolia Jack, Malaysian Ginseng, or Longjack, is an herb which has been found to support healthy libido and cortisol levels. There are a few different types of Tongkat commonly known as yellow, red, or black. Ours is the yellow Tongkat which is typically regarded as the most potent. Our product includes the extract, eurycomamones, which is the chemical compound responsible for Tongkat's effects.