[Chemical evaluation and consideration on the traditional drug "ULUUS" (1)].

Traditional medicine named "ULUUS" is regarded to be the first Dutch precipation with a western name in Japan. It was found that this drug consists of Rhubarb (originated from Rheum sp.). Although it is still uncertain whether it was made only of Rhubarb by being kneaded hard into the monotonous square form, we could not find out any other ingredients except Rhubarb, on the bases of our chemical analysis.