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Published Online:https://doi.org/10.1176/ajp.125.3.320

Tybamate was evaluated in a controlled, double-blind study conducted with 126 anxious neurotic patients seen in general practice. Tybamate produced significantly more improvement than placebo only at the final four-week evaluation. The largest tybamate-placebo differences were observed on measures of somatic manifestations of free anxiety, followed by measures of bound anxiety such as phobic-obsessive-compulsive symptoms. Severity of initial symptomatology was related to the patient's response to tybamate but not to placebo; those patients who were initially sickest improved significantly more than patients who were initially less sick.

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