I have been to see my psychiatrist today and he wants to up my mirtazapine does from 30mg to 45mg. I have resisited this for various reasons: I am afraid that an increased dose would lead to increased sedation and increased weight problems. I do have problems in the morning with low mood and irritability but it is not as bad as when I was really ill with depression. Then I would be crying and feeling panicky and not want my husband to go to work. I am obsessed with my weight at the moment so Dr J has limited my weigh ins to once a week. He has said my BMI must not fall below 20. I am not sure whether the increased dose will affect my concentration? It might relieve my depression (of which I suffer from chronically) but at what price? I would be interested to hear from anyone who is taking 45mg of mirtazapine and whether it has affected their weight/concentration/irritability. Thanks in anticipation. Jane.