Black Cohosh for Mood Support

Research suggests that black cohosh may offer some benefit for mood-related symptoms during the menopausal transition, with several reviews identifying it alongside St. John's wort as among the better-supported botanical options for reducing depression and anxiety in perimenopausal and postmenopausal women. Studies indicate a possible mechanism involving partial activation of the mu opioid receptor, which researchers have proposed may help explain its reported effects on mood and other menopausal symptoms. The evidence base includes a mix of narrative reviews, one small unblinded trial of a multi-ingredient supplement, and reviews of randomized controlled trials, with most pointing in a generally supportive direction for mood outcomes, though findings across the broader literature are described as inconsistent and study quality varies considerably. Limitations noted across the research include small sample sizes, variability in supplement formulations, insufficient long-term safety data, and uncertainty around dosing, which has led some reviewers to stop short of formal recommendations despite acknowledging the available positive signals.