Goldenseal for Immune Function

Research suggests that goldenseal may support certain aspects of immune function, particularly by influencing antibody production in response to specific antigens. The available evidence comes from a single animal study conducted in rats, which found that continuous goldenseal extract supplementation was associated with increased IgM antibody levels during an initial immune response, though this effect appeared limited to the early weeks of exposure. Studies indicate a directionally positive signal, but the evidence base is extremely limited — one preclinical animal study cannot establish how these findings translate to human immune responses. Given the absence of human clinical trials, randomized controlled studies, or meta-analyses on this specific application, firm conclusions about goldenseal's role in human immune function remain premature.