While depression after liver transplantation (LTX) is associated with decreased survival, the effects of treating depression remain unknown. We assessed a previously-described, prospective cohort of 167 patients transplanted for alcohol-related liver disease from 1998–2003. Depressive symptoms were measured with the Beck Depression Inventory serially throughout the first post-transplant year. Adequacy of antidepressant treatment was measured with the Antidepressant Treatment History Form. Using Cox-proportional Hazards modeling, survival times were assessed for recipients with no depression vs. depression with adequate medications vs. depression with inadequate medications. Seventy-two recipients had depressive symptoms in the first post-transplant year. Of these, 43% (n=31) received adequate pharmacotherapy and 57% (n=41) received inadequate (n=7) or no pharmacotherapy (n=34). After a median follow-up time of 9.5 years, 32% of the inadequately treated depressed group survived vs. 52% of the adequately treated group and 56% of the non-depressed group (p=0.006). Compared to the non-depressed group, those with adequately treated depression had no significant difference in survival. However, recipients with depression and inadequate pharmacotherapy had decreased survival times compared to non-depressed recipients (HR for death=2.44, 95% CI=1.45, 4.11), controlling for other known confounders. The factor most strongly linked to long-term mortality after liver transplantation in this cohort was untreated depression.