title: Application of the simple mathematical function for the quantitative description of in vitro release of drug agents from the ointment bases.
abstract: An attempt of the quantitative description of the release process by the simple mathematical functions has been made. It was found that the hyperbolic function q = t/(A + Bt) is the best for this application. The values of the parameters 1/A and 1/B are proportional to the released amounts of drug, so they can be useful for the evaluation of the rate of the release process.
mesh_terms: D002626:Chemistry, Pharmaceutical; D007700:Kinetics; D008433:Mathematics; D008956:Models, Chemical; D009823:Ointment Bases / Q000032:analysis*; D010592:Pharmaceutic Aids / Q000032:analysis*; D004364:Pharmaceutical Preparations / Q000032:analysis*
chemical_list: D009823:Ointment Bases; D010592:Pharmaceutic Aids; D004364:Pharmaceutical Preparations