The Chinese herbal formula Suan Zao Ren Tang is a well known formula for insomnia, anxiety and other related issues when it fits with the patients diagnosis in TCM terms. This study looked at 67 climacteric women with insomnia. The researcher found not only an improvement in sleep but benefits to daytime functioning.
The formula was generally well tolerated minus a few woman who withdrew from GI issues and/or dizziness. As with many of these studies, this would likely be avoided if proper TCM diagnoses were used before administering the treatment.