[On the effect of d,l-kavain: experience with neuronika (author's transl)]

To test kawa-pyron L,D-Kavain, one of the constituents of the kawa-rhizom, a double blind study was carried out. 84 paticipants suffering from vegetative symptoms were selected according to Eysenck's personality inventory (MMQ). The first group of 32 were between 20 and 40, the second between 30 and 55 years of age. Each group was diviided into a kavain group and a placebo group. Treatment consisted of 2 capsules per day (with 200 mg kavain in each capsule) respectively 2 placebo for the memebers of the control group. The program testing the effects of treatment was controlled by measurements of memory functions, vigilance, fluency of mental functions, reacton time, and of circulation functions controlled by ergometer (100 watt). We registered a continuous increase in the psychophysical parameters mentioned above during the 3 weeks of treatment. There was no difference between younger and older persons.