I had suffered from depression.I was on medicines,such as,Depsonil,Trazolon,Surlift,Venlor,Fludac and Mirtaz for a long time.Initially Depsonil showed some improvement and then Mirtaz 15 and 30 also showed improvement.I stoped taking Mirtaz as I have cholestrol problem.Since last 16 years I have stopped taking these depression medicines.Now I take only Oliza 5 at night according to my physicians prescrition.Also at present I dont have any major depression problem.But I still have problems with concentration and focus.Moreover lot of thoughts wander in my mind.Please suggest medicine,preferably for one time keeping in view my cholestrol is high.