What is Tongkat Ali?

Tongkat Ali, known scientifically as Eurycoma longifolia, is an herb that has gained attention for its ability to increase libido across various human populations. Commonly referred to as Tongkat Ali in the literature, it is also known as longjack. The Indonesian variety of this herb is considered to be the most potent for enhancing libido effects.

Tongkat Ali works by increasing the amount of free testosterone, which is testosterone that is not bound to blood proteins and is biologically active. This increase in free testosterone is achieved by reducing levels of a protein called sex hormone binding globulin (SHBG), which binds to testosterone making it inactive. Reduction in SHBG levels increases the bioavailability of testosterone.

Research, such as a study published in Evidence-Based Complementary and Alternative Medicine in 2012, indicates significant improvements in libido and sexual function associated with Tongkat Ali consumption. However, the literature suggests mixed results, and further controlled studies are needed for a more conclusive understanding 1.