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Background:  Opoid use disorder (OUD) is a global illness and reduction in craving by repeatative Transcranial Magnetic Stimulation (RTMS) is one of its management approaches. Orbito-frontal Cortex is implicated in the several behavioral aspects of substance use including craving. Brain derived neurotrophic factor (BDNF) has a critical role in addictive properties of drugs of use. Previous studies have shown significant improvement in craving with RTMS and demonstrated alterations of serum BDNF levels in various substance dependent individual associated with craving.  Aim:  To examine the efficacy of continuous Theta Burst Stimulation RTMS (CTBS-RTMS) over the right OFC as an adjunct to Naltrexone in patients of OUD and its correlation with serum BDNF levels.  Methods:  Forty patients with OUD were recruited with purposive sampling. At the end of detoxification CTBS -RTMS was applied by dividing them into two equal groups as active and sham group using alternate allocation. Obsessive compulsive drug use scale (OCDUS) was applied and serum BDNF level was measured overtime till the end of CTBS-RTMS session. Data was analyzed by SPSS version 25.  Results:  Both groups had shown significant reduction in craving (OCDUS score) and serum BDNF from the baseline to 14th session of the RTMS. But there was no significant difference when compared between the two groups. Significant correlation was observed between serum BDNF levels overtime with different clinical variables in active group.  Conclusion:  The study adds to the literature in building an understanding of how rTMS could be used in reducing cravings for opioids.

journal of addictive diseases

Efficacy of continuous theta burst stimulation - repetitive trancranial magnetic stimulation on the orbito frontal cortex as an adjunct to naltrexone in patients of opioid use disorder and its correlation with serum BDNF levels: a sham-controlled study