Angelica gigas Nakai (commonly known as Korean Angelica) has a long history of use in traditional Korean and East Asian medicine. In traditional practice, it is believed to support male vitality, stamina, and reproductive health. The primary traditional use is for improving circulation, alleviating fatigue, and tonifying the blood, which are sometimes indirectly associated with male reproductive function and libido. The roots of Angelica gigas contain compounds such as decursin and decursinol angelate, which are thought to have various biological activities.

However, scientific research specifically linking Angelica gigas to male reproductive health is limited. Most available studies focus on its anti-inflammatory, neuroprotective, and anti-cancer properties rather than direct effects on male fertility, testosterone levels, or sexual health. Some animal studies have suggested that extracts from this plant may have protective effects against testicular damage or endocrine disruption, but these are preliminary and not widely replicated. There are no robust clinical trials in humans confirming efficacy for male reproductive health.

In summary, Angelica gigas Nakai is primarily supported by traditional use for male reproductive support, with limited scientific evidence to validate these claims. Therefore, while it is commonly included in traditional formulas for men’s health, the strength of evidence is modest and primarily anecdotal.