| 摘要 |
PROBLEM TO BE SOLVED: To obtain the subject stable liquid formulation without causing precipitation turbidity, etc., for a long time even at a low pH by formulating a crude drug extract with a polyoxyethylene-polyoxypropylene glycol. SOLUTION: This liquid formulation contains (A) a crude drug extract (preferably Acanthopanax gracilistylus W. W. Smith or Boschniakia rossica Fedtsch. et Flerov.) and (B) a polyoxyethylene-polyoxypropylene glycol and preferably further (C) polyvinylpyrrolidone and the pH thereof is regulated to 2.2-3.8. The formulated ingredient B is used in an amount within the range of 0.01-300 based on 1 of the ingredient A and preferably within the range of 0.01-1.5 wt.% based on the total amount of the liquid formulation. The formulated ingredient C is used in an amount within the range of 0.1-600 based on 1 of the ingredient A and preferably within the range of 0.1-3.0 wt.% based on the total amount of the liquid formulation. |
