have you seen the tv commercial about how if your anti-depressants stop working than you will have to combine different ones to get the same results ( been there,done that)
i know for a fact that mercury was causing my depression, I am almost depression free since having my amalgams out , I get very minor depression spells now and then , but not like before ,now I just have to fix my brother ,he is going thru the same thing with depression but he also has fibromyalgia and chronic fatigue syndrome it will take some time with him.