Abstract:
The study of the specification of Khaao-Yen-Nuea Khaao-Yen-Tai has been carried out on the morphological, macroscopical, microscopical (histoloty and powdered drug) characteristic, limit of moisture content, total ash, acid insoluble ash, amount of water and ethanol extractive and TLC patterns of the 4 authentic-plant drngs. Of 40 investigated samples of crude drugs sold in commercial markets, it was found that the drugs belonged to the genera Smilar (80 percent), Dioscorea (7.5 percent) and Pygmaeopremna (12.5 percent).
