Danggwijagyaksan for climacteric syndrome in peri- and postmenopausal women with a blood-deficiency dominant pattern: study protocol for a randomized, double-blind, placebo-controlled pilot trial

Background This study aims to explore the safety, efficacy, and feasibility of Danggwijagyaksan (DJS) for alleviating climacteric syndrome in peri- and postmenopausal women with a blood-deficiency dominant pattern.