MBRP + Vortioxetine VS MBRP on Preventing Relapse in Chronic MA Users

Participants who allocate to the experimental group will receive 8-week 10-20mg/day vortioxetine combined with MBRP intervention. Participants who allocate to the control group will receive 8-week 1-2#/day placebo combined with MBRP intervention. Vortioxetine (Brintellix®), a novel antidepressant for the treatment of adult with major depressive disorder, has been approved by the Chinese Food and Drug Administration in the use of China in 2018. The MBRP intervention is composed of 8 weekly, 2-hour sessions delivered in small group format (10-14 participants) by two therapists to prevent MA relapse. In MBRP, therapists facilitate discussions and exercises and introduce the meditation practice component. Group sessions include discussions of mindfulness as a means of coping with MA craving, negative affect and painful cognitions/sensations that precipitate relapse, role-playing exercises, meditation practice and implement practice into high-risk situations and in daily life, as well as homework assignments. Participants from both groups will also receive 10 visits: visit 1 (week 0): medical and psychiatric screening; visit 2-9 (week 1, 2, 3, 4, 5, 6, 7 and 8): depressive symptoms and cognitive function, MA use, and MA craving; visit 10 (week 24): MA use (assessment of relapse rates), assessment of depressive symptoms, improvement in cognition and MA craving.