In this double-blind study of the effect of Frenquel on 39 chronically hospitalized disturbed psychotic patients, the investigators were entirely unaware of whether the patients were receiving Frenquel or the placebo until after they had committed themselves on the patient's status. Despite the long-standing nature of the disturbances in behavior significant improvement was observed in a large proportion of the patients with various types of schizophrenic reactions. We feel these results are most encouraging for further use of this drug in patients with psychoses.Abstract Teaser