Objective: To study the transdermal behavior of Xiaozheng Zhitong cataplasm in rats.
Method: With tetrahydropalmatine as the index, the Franz diffusion cell method was adopted for the experiment. Sample content was determined with HPLC.
Result: The transdermal permeability and the transmission rate of tetrahydropalmatine accumulated for 24 h were 20.20% and 0.744 1 microg x cm(-2) x h(-1), respectively.
Conclusion: The transdermal behaviors of Xiaozheng Zhitong cataplasm were ideal in conformity with the zero order kinetic model.
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