Tongkat Ali, also known as Longjack or Eurycoma longifolia, is an herbal supplement derived from the roots of a green shrub native to Southeast Asia. It has been used for centuries in traditional medicine in Malaysia, Indonesia, and Vietnam for various ailments, including fevers, erectile dysfunction, and bacterial infections. The plant's extract is available in several forms, including pills, concoctions, and powder.
Tongkat Ali is often associated with boosting male fertility, increasing testosterone levels, improving sexual performance, and relieving stress. Some studies suggest it may improve body composition, physical stamina, and muscle recovery. Compounds found in Tongkat Ali, such as quassinoids, may help the body use energy more efficiently, reduce fatigue, and improve endurance. A 2025 review of Tongkat Ali supplements showed a wide range of options available, with prices ranging from around $10 to over $40 depending on the quantity, concentration, and brand. Many brands offer Tongkat Ali supplements, including Nootropics Depot, Bulk Supplements, Swanson, and Nutricost. Akarali is a manufacturer that sources Tongkat Ali directly from Malaysia.