Percutaneous permeability study for patches Shangshi Zhitong on different kinds of bases / 中国中药杂志

<p><b>OBJECTIVE</b>To study the percutaneous permeability of patches Shangshi Zhitong on different kinds of bases with the permeation percentage of brucine, strychnine and atropine.</p><p><b>METHOD</b>Using modified Franz difusion to investigate the penetration quantity of brucine, strychnine and atropine. The contents of brucine, strychnine and atropine were determined by HPLC.</p><p><b>RESULT</b>The average accumulative permeation percentage of brucine, strychnine and atropine on new base were 53.25%, 74.52% were 34.32%, respectively, and on old base are 54.90%, 50.24%, 46. 54%, respectively.</p><p><b>CONCLUSION</b>The new base benefits the lipophilic drugs and releases more stably.</p>

Application of thermoplastic elastomer in hot-melt pressure sensitive adhesives for transtermal drug delivery / 中国中药杂志

Development of drug dosage forms to a great extent depends on the development of drug auxiliary materials. The development of a new type of polymeric drug auxiliary materials will bring on the developing of a novel dosage forms technology and a flood of new drug dosage forms. Thermoplastic elastomer is a new type of drug polymeric auxiliary materials, at present, which has a broad application in the field of hot-melt pressure sensitive adhesives. This review mainly discussed a new transtermal Chinese drug delivery system, including matrix composition of the formula, modified thermoplastic elastomer for hot-melt pressure sensitive adhesives and their development prospects in the traditional Chinese drug delivery system. It suggested that thermoplastic elastomer of hot-melt pressure sensitive adhesives has broad development prospects in the field of the transtermal drug delivery system for traditional Chinese medicine.