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Pregabalin augmentation for resistant obsessive–compulsive disorder: a double-blind placebo-controlled clinical trial

Published online by Cambridge University Press:  25 October 2019

Arash Mowla Open the ORCID record for Arash Mowla [Opens in a new window]  and
Mehrnoosh Ghaedsharaf
Arash Mowla*
Affiliation:
Substance Abuse and Mental Health Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
Mehrnoosh Ghaedsharaf
Affiliation:
Substance Abuse and Mental Health Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
*
*Arash Mowla, MD, Email: mowlaar@gmail.com
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Abstract

Background and objective.

Glutamate dysfunction has been shown to be associated with pathophysiology of obsessive–compulsive disorder (OCD). Our objective is to survey the effects of pregabalin (a glutamate-modulating agent) as an augmenting treatment for resistant OCD.

Patients and methods.

In this 12-week double-blind placebo-controlled clinical trial, 56 patients with resistant OCD were randomly allocated to receive either pregabalin or placebo plus their current medication (sertraline). Yale–Brown Obsessive Compulsive Scale (Y-BOCS) was used to evaluate the outcomes. Adverse effects were also registered.

Results.

Of the 56 patients with resistant OCD who were randomly allocated in 2 groups of pregabalin (n = 28) and placebo group (n = 28), 42 patients (22 in pregabalin group and 20 in placebo group) completed the trial. Throughout the trial, the mean score decreased from 26.13± 7.03 to 8.81 ± 3.47 in the pregabalin group (p < 0) and from 26.85 ± 4.34 to 17.63 ± 4.22 in the placebo group (p < 0). At the end of trial, 16 (57.14%) patients in the pregabalin group and 2 (7.14%) patients in the placebo group showed more than 35% decline in YBOCS (p < .01). The pregabalin group showed good tolerability and safety.

Conclusions.

Our study revealed that pregabalin, as an augmenting medication, is more effective than placebo in the treatment of patients with resistant OCD.

Keywords

Pregabalinobsessive–compulsive disorderglutamate
Type
Original Research
Information
CNS Spectrums , Volume 25 , Issue 4 , August 2020 , pp. 552 - 556
Copyright
© Cambridge University Press 2019

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