title: [Study on the preparation of effervescent tablets of EGb and its quality].
abstract: OBJECTIVE
  To prepare effervescent tablets of EGb and establish quality preparation.
  
  
  METHODS
  Taking pH, disintegration time and rigidity as index, the formulation and technique of EGb effervescent tablets were optimized by orthogonal experiment, the products were prepared and its stability were tested.
  
  
  RESULTS
  The optimum procedure condition was adding 12.5% citric acid, 20% sodium bicarbonate encapsulated by PEG6000, the products were tested by stability, the preparation was stable.
  
  
  CONCLUSIONS
  It is valuable to be further studied as a new preparation of EGb.
authors.affiliation: Zhejiang CONBA Pharmaceutical Co. Ltd, Zhejiang, Lanxi 321100.
authors.forename: Linshui
authors.initials: L
authors.lastname: Hu
authors.forename: Jun
authors.initials: J
authors.lastname: Zheng
authors.forename: Shengrong
authors.initials: S
authors.lastname: Shao
mesh_terms: D002626:Chemistry, Pharmaceutical / Q000379:methods*; D019343:Citric Acid; D004355:Drug Stability; D004365:Drugs, Chinese Herbal / Q000737:chemistry* / Q000592:standards; D020441:Ginkgo biloba / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D018515:Plant Leaves / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry; D011092:Polyethylene Glycols; D011786:Quality Control; D017693:Sodium Bicarbonate; D013607:Tablets; D013678:Technology, Pharmaceutical / Q000379:methods*
chemical_list: D004365:Drugs, Chinese Herbal; D013607:Tablets; D019343:Citric Acid; D011092:Polyethylene Glycols; D017693:Sodium Bicarbonate