Tongkat ali (Eurycoma longifolia), also known as longjack, pasak bumi, or Malaysian ginseng, is a flowering plant in the Simaroubaceae family that is native to the Indochina region. The root of the plant has been used for centuries in folk remedies and has become popular as a dietary supplement. Tongkat ali (Eurycoma longifolia) may help maintain a healthy mood and contribute to a calm feeling of overall well-being.* It is often taken to support sexual health in men and may help with athletic endurance.* Longjack, also known as Tongkat ali, is a plant native to Southeast Asia. This herb has been used in traditional medicine for centuries and is considered an aphrodisiac by the people of Malaysia. Longjack contains three key alkaloids: eurycomanone, which promotes muscle growth; emodin, which increases testosterone levels; and yohimbine, which helps improve mood and stamina.* This herb also boosts hormones in men, which can help increase muscle mass and athletic endurance. One of the most popular benefits of long jack.*