Patent ID: 6919094
Filing Date: 2005-07-19
Classification: A61K,A61P

Abstract:
1. A method for preparing a pharmaceutical composition made of herbs based on the following weight proportion: rhizome of chuanxiong 10 g-25 g, and rhizome of tall gastrodia 1.5 g-8 g; the method comprising: (1) dehydrating, smashing, and mixing together rhizome of chuanxiong and rhizome of tall gastrodia to obtain a mixed powder of rhizome of chuanxiong and rhizome of tall gastrodia; (2) reflux extracting the mixed powder of rhizome of chuanxiong and rhizome of tall gastrodia with 90% alcohol solution at least once to extract at least one reflux extracted solution; (3) if the mixed powder of rhizome of chuanxiong and rhizome of tall gastrodia is reflux extracted more than once, then the reflux extracted solutions are merged into one reflux extracted solution; (4) filtering the reflux extracted solution to obtain a reflux filtrate; (5) condensing the reflux filtrate to a clear cream at a relative density of 1.27 and at a temperature ranging from 55° C. to 60° C.; (6) cooking the gruffs remaining from the alcohol extraction of step (2) of rhizome of chuanxiong and rhizome of tall gastrodia with water at least once to obtain at least one cooked extracted solution; (7) if the gruffs of rhizome of chuanxiong and rhizome of tall gastrodia arc cooked more than once, then the cooked extracted solutions are merged into one cooked extracted solution; (8) filtering the cooked extracted solution to obtain a cooked filtrate; (9) condensing the cooked filtrate to clear cream at a relative density of 1.27 and at a temperature ranging from 55° C. to 60° C.; (10) combining the clear creams from steps (5) and (9) together; (11) adding excipient to the combined clear cream; and (12) vacuum dehydrating; smashing; and filtering the cream.