(Another prescription involves) holding three copper coins in the mouth, causing saliva to flow out like a spring. Another formula contains Corydalis Rhizoma (Yanhusuo), Ligusticum Sinense Rhizome (Gaoben), and Indigo Naturalis (Qingdai), but does not include Menthae Haplocalycis Herba (Bohe) or Asari Radix et Rhizoma (Xixin).