LIDOCAINE IN MICROEMULSION - A DERMAL DELIVERY SYSTEM

被引:32
作者
CARLFORS, J [1 ]
BLUTE, I [1 ]
SCHMIDT, V [1 ]
机构
[1] INST SURFACE CHEM,S-11486 STOCKHOLM,SWEDEN
关键词
D O I
10.1080/01932699108913146
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
In order to obtain a microemulsion that is stable at skin temperature, the regions of existence of microemulsions of water and isopropyl myristate were studied as a function of hydrophile-lipophile balance (HLB) of nonionic surfactant mixtures. The microemulsion dissolves large amount of the local anaesthetic - lidocaine. The amount of dissolved lidocaine in the microemulsion was proportional to the isopropyl myristate content and limited to its solubility in this solvent. The addition of lidocaine lowered the phase inversion temperature (PIT) of the system and increased the temperature range for microemulsion stability. The structure of the microemulsion, as investigated by proton Fourier transform pulsed-gradient spin-echo NMR spectroscopy, was found to be bicontinous. The physico - chemical properties of the microemulsion as well as the low toxicity of its components result in formulation intended for topical administration.
引用
收藏
页码:467 / 482
页数:16
相关论文
共 23 条