抄録
A considerable proportion of crude drugs is used for dermatological purposes and infectious diseases in thailand. The authors' primary concern was to examine their medicinal activity and to isolate active principles, if any, from them. Methanol extracts of 24 drugs were examined for antimicrobial activities against Escherichia coli, Staphyl-ococcus aureus, Candida albicans and Trichophyton mentagrophytes. Although more than 40% of the extracts showed some activity, there was no drug posessing a strong activity.