OBJECTIVE:To study the enhancement effect of dipentene in the transdermal absorption of tinidazole.METHODS:In vitro,by means of traditional method to compare the enhancement effect of dipentene with azone at difference concentrations in the transdermal absorption of tinidazole.RESULTS:andCONCLUSION:It was showed that various concentrations of transdermal enhancers could promote absorption of tinidazole in different degrees and 4% Azone and 3%dipentene were the most effective.