... All patients were also prescribed a modified version of the herbal formula Si Ni San, which was comprised of the following herbs: Bai Shao 15g He Huan Hua 15g Dai Zhe Shi 15g Jiang Ban Xia 15g Zhi Shi 15g Huang Lian 10g Chai Hu 10g The herbs were administered daily, split into two doses to be ...