[Voluntary description of drug effects as a method in clinical trials. Presented using the example of pentobarbital, promazine and their combination].
Free description of drug effects is suggested as a method in which subjects or patients describe spontaneously the effects of psychotropic drugs from their own experience with their own verbal concepts. The method is exposed in detail and examplified by examination of pentobarbitone, promazine and their combination (Norkotral). The results of the free description method have psychological as well as psychopharmacological plausibility. It is suggested to implement the method as a new means of clinical research in psychopharmacology.