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 is an extract of the eurycomamones, which is the chemical compound responsible for Tongkat's effects. This allows for a much smaller dose to be necessary than if one was to try and get the same eurycomamone through ingesting the herb itself.