During menopause, up to 90% of women will experience symptoms of anxiety, such as nervousness, irritability, fatigue, muscle aches, depression, and low libido. Concern over the safety and effectiveness of hormone replacement therapy for relieving these symptoms has caused many women to seek alternative medical treatments. Data suggest that black cohosh has a direct effect on the neurotransmitters and receptors involved in anxiety. This study will determine whether black cohosh can effectively treat anxiety symptoms in menopausal women.