Light and Ion Maintenance In Treatment for Depression (LIMIT-D): Feasibility Study

This study is exploring whether light therapy and a dietary supplement called lithium orotate can help people with depression stay well after they stop taking antidepressants. It is a feasibility study, meaning researchers are first checking whether this approach is practical and acceptable before running a larger trial. **You may be eligible if:** - You have a diagnosis of major depressive disorder (MDD) - You are currently taking a standard antidepressant at an approved dose (unchanged for at least a month) - You want to stop your antidepressant (for example, due to side effects) - Your depression is in remission (low symptom scores on a clinical scale at two visits) - You are comfortable completing English or French surveys **You may NOT be eligible if:** - You have a primary diagnosis other than MDD (e.g., bipolar disorder, personality disorder) - You have seasonal affective disorder or psychotic depression - You are at high risk for suicide - You have a significant alcohol or substance use problem in the past 6 months - You have a serious neurological condition or unstable medical illness Talk to your doctor to see if this trial is right for you.