Tongkat Ali, or Longjack, is a herbal supplement that comes from the roots of the green shrub tree Eurycoma longifolia, which is native to Southeast Asia. Our Tongkat Ali is extracted at a 200:1 ratio from the Indonesian plant and is standardised for 10% Eurycomanone, a powerful Quassinoid (an extract derived from plants). Our Tongkat Ali can be used by males and females. It is safe and natural. Tongkat ali is often claimed to boost athletic performance and increase muscle mass. This is because it contains compounds called quassinoids, including eurycomaoside, eurycolactone, and eurycomanone, which may help your body use energy more efficiently, reduce fatigue, and improve endurance Potential Health Benefits. May increase testosterone levels and improve male fertility. May relieve stress May improve body composition