期刊
PHARMACOPSYCHIATRY
卷 45, 期 2, 页码 51-56出版社
GEORG THIEME VERLAG KG
DOI: 10.1055/s-0031-1291176
关键词
pregabalin; generalized anxiety disorder; anxiety disorder; anxiety; dose; response curve
Introduction: Pregabalin is a structural analogue of the inhibitory neurotransmitter GABA. Although pregabalin has demonstrated efficacy in the treatment of generalized anxiety disorder (GAD) in a number of randomized controlled trials, there is little published data on the optimal dose for treating this condition. The objective of the current study was to examine the dose-response relationship for treatment of GAD with pregabalin. Method: The current study pools results from previous fixed-dose treatment trials of GAD with pregabalin and uses curve-fitting statistical procedures to generate curvilinear regression lines as a synthesis of previous dose-response information. Results: Peak reduction in anxiety symptoms was observed to occur at a dose of approximately 450 mg/day, with a small reduction in treatment effect beyond this dose. Treatment effect on psychic anxiety symptoms reached a peak at approximately 400 mg, with a reduction in efficacy beyond this dose. Somatic anxiety symptoms showed continued increase in therapeutic effect up to the maximum dose of 600 mg/day. Discussion: Implications for psychiatric practice, limitations of the methodology and avenues for future research are discussed.
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