Polygonatum species, commonly known as Solomon’s Seal, have a long history of use in traditional Chinese medicine (TCM) and other herbal systems. In TCM, species such as Polygonatum sibiricum (Huang Jing) and Polygonatum multiflorum are classified as herbs that “tonify Yin,” and are sometimes included in formulas intended to support male vitality, address impotence, or improve reproductive health. These uses are based mainly on traditional theory and anecdotal evidence. The root is believed to nourish the kidneys, which, according to TCM, are associated with reproductive function.

Scientific research on Polygonatum’s direct effects on the male reproductive system is limited. Some in vitro and animal studies have reported antioxidant, anti-inflammatory, and immunomodulatory activities for Polygonatum extracts, and a few animal studies suggest potential benefits for testosterone levels and sperm quality. However, these findings are preliminary and not sufficient to confirm clinical efficacy in humans.

In summary, the use of Polygonatum to support the male reproductive system is primarily grounded in traditional herbal medicine rather than strong scientific validation. The available scientific evidence is limited and largely preclinical. Therefore, the justification for its use in this context is considered traditional, with a low to moderate evidence rating.