http://www.psychiatrist.com/JCP/article/Pages/2018/v79n01/15r10545.aspx

The study looked at uncommon question of what happens to people on antidepressants after 8 weeks? We all know AD work, but most studies stop at 8 weeks. This study of >100 studies and tens of thousands of subjects revealed that recovery from depression was likely to happen within 6 months compared to placebo, up to 12 months. The AD group generally did moderately better than the placebo group on standardized assessments. AD are good to do vs. placebo.