Tongkat Ali (Eurycoma longifolia) is a Southeast Asian botanical with a long history of traditional use, now supported by a growing body of modern research. Studies indicate that its root extract, often standardized to the bioactive compound eurycomanone, may help support healthy testosterone levels, particularly in men experiencing age-related decline or moderate stress. Research suggests potential benefits spanning several areas, including improved energy and reduced fatigue, enhanced libido and sexual function, better mood, and support for muscle strength when combined with exercise. Some clinical trials have also pointed to its role in modulating cortisol levels, which may contribute to its observed stress-relieving properties. While findings are promising, much of the research is still emerging, and individual responses can vary.
Compare this supplementResearch suggests that Eurycoma longifolia may support male fertility through several complementary mechanisms, inclu...
View studies →Research suggests that Tongkat Ali (Eurycoma longifolia) may support libido and sexual function in both animal and hu...
View studies →Research suggests that Tongkat Ali may offer modest mood-related benefits in certain populations, though the evidence...
View studies →Research suggests that Eurycoma longifolia (Tongkat Ali) shows promising evidence for supporting testosterone levels ...
View studies →Research suggests that Tongkat Ali may offer some benefits related to energy and fatigue, primarily through its appar...
View studies →Research suggests that Tongkat Ali may support muscle strength and androgenic activity across a range of study types,...
View studies →Research suggests that Tongkat Ali is recognized within the broader scientific literature as a plant with adaptogenic...
View studies →These are commonly referenced dosage ranges for this supplement. They are not medical recommendations. Always consult a healthcare provider before supplementing.
| Form | Dose range | Frequency | Studied for | Source |
|---|---|---|---|---|
| Extract | 200 mg | Daily | Energy, fatigue reduction, and muscle strength | Common in trials assessing ergogenic and fatigue outcomes |
| Extract | 300–600 mg | Daily | Male fertility support and sperm quality | Used in studies examining spermatogenic parameters and male reproductive health |
| Extract | 400 mg | Daily | Stress relief and mood support | Used in clinical trials examining cortisol reduction and mood outcomes |
| Extract | 200–300 mg | Daily | Testosterone support, libido, and sexual function | Most common dose in RCTs; standardized water-soluble extract (e.g. Physta) |