| abstract |
The invention provides a preparation method of Shengmaiyin oral liquid. Red ginseng, Ophiopogon japonicus and Schisandra chinensis are taken, and pulverized into coarse powder respectively, and the raw materials are extracted with different solvents and at different pH, thereby improving the extraction efficiency; After concentration, the water-insoluble impurities are precipitated in water to reduce the generation of precipitation. |