| 摘要 |
Drug delivery device suitable for preferential delivery, via electrotransport, of a preferred isomeric form of a pharmaceutically active chiral compound from a mixture of the isomeric forms of said compound is provided. The device is characterised by one of the following features: the size of the donor electrode, the concentration of drug in the formulation, the current provided by source of electrical power or the amount of the formulation applied, are less than those necessary to provide therapeutically effective levels of the drug, if the preferred and less preferred isomers are delivered transdermally at the same rate. |
