The information provided here is not a replacement for a doctor. You shouldn't use it for the purpose of self-diagnosing or self-medicating but rather so you can have a more informed discussion with a professional TCM practitioner.
The top herbs in Gun Tan Wan are Chlorite Schist (Meng Shi), Rhubarb (Da Huang) and Baikal Skullcap Roots (Huang Qin)
Gun Tan Wan has sometimes been used by TCM professionals to alleviate the symptoms of stubborn headaches