Butea superba is a herb native to Thailand and has been traditionally used in Thai medicine as an aphrodisiac and to support male vitality, including claims related to testosterone and male sexual health. The roots of the plant are the primary part used in traditional remedies, often consumed in various forms such as powders, tinctures, or capsules. The traditional use is based on anecdotal reports and historical practices, with its reputation largely built on its role in supporting sexual performance and general male health.

Scientific studies on Butea superba are limited. Some small-scale clinical trials and animal studies suggest potential androgenic and PDE5 inhibitory effects, which may lend some support to its traditional use for male sexual function. However, robust evidence specifically linking Butea superba to increased testosterone levels in humans is lacking. Most studies have methodological limitations, such as small sample sizes and lack of rigorous controls. As a result, while traditional use is well documented, scientific validation remains insufficient, and the overall evidence supporting its effect on testosterone is weak.

In summary, Butea superba is primarily used based on tradition for supporting male sexual function and possibly testosterone, but scientific support is limited and inconclusive.