Abstract
MORE than three years ago, I reviewed complications from the use of tranquilizing drugs.1 Since that review, some complications have become of less concern, some have increased in importance, and added knowledge has been gained about others. Also, new tranquilizing and antidepressant drugs have appeared, each providing new complications. This review will attempt to cover these developments, with the earlier review as a reference for more comprehensive coverage of the subject. To avoid confusion, major drug classes will be considered separately. As before, complications will be classified according to types of pharmacologic actions.TranquilizersPhenothiazine DerivativesThese synthetic drugs are . . .

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