Thiothixene plasma levels and clinical response in acute schizophrenia.

Plasma levels of cis and trans thiothixene were compared to clinical response in 8 acutely schizophrenic inpatients. While absolute plasma levels did not appear to correlate with clinical condition, the data did suggest that increases or decreases in cis plasma levels correlated with corresponding improvements or deteriorations in clinical condition in thiothixene responsive patients. While the results are very preliminary, the authors suggest that future studies differentiate the cis and trans isomers, and analyze relative as well as absolute changes in plasma levels as compared to clinical changes.