The Effect of Add-on Buprenorphine to Matrix Program in Reduction of Craving and Relapse Among People With Methamphetamine Use Disorder: A Randomized Controlled Trial.

BACKGROUND Methamphetamine addiction is a global issue. Buprenorphine might have beneficial roles in reducing craving to methamphetamine use via altering neurotransmission signaling and dopaminergic system-related reward mechanisms. PROCEDURES This clinical trial was performed in 2019 to 2020 in Khorshid Hospital, Isfahan, Iran. The study was conducted on patients with methamphetamine use disorder. The intervention group received sublingual buprenorphine for 8 weeks, and the other group also received placebo tablets. Patients were followed up and visited every month for the next 4 months. Both groups were treated simultaneously by matrix program for 2 months and observed for the next 4 months. Patients filled out the Cocaine Craving Questionnaire-Brief (CCQ-Brief) every week during intervention time (first 2 months) and every month during follow up visits (4 months). The Depression Anxiety Stress Scale (DASS-21) was also filled out before and after interventions for all of the patients. Data were analyzed using SPSS software using χ2, independent t test and repeated-measure analysis of variance tests. RESULTS Our data indicated significantly lower CCQ-Brief scores in the intervention group compared with the placebo group (P < 0.05). It was also indicated that changes in CCQ-Brief scores were also significant among both groups (P < 0.001). We also showed that the anxiety, depression, and stress scores reduced significantly after interventions (P < 0.001). These scores were also significantly lower in the intervention group compared with placebo group (P < 0.05). CONCLUSIONS Buprenorphine may be effective and may have positive potential roles in reducing methamphetamine craving. This drug is also helpful in reducing the anxiety, depression, and stress of patients with methamphetamine use disorders.