anxiety
"At 19 I went on Sertraline as I'd struggled with varying levels of anxiety throughout my teens. About a year later I tapered and came off for about 6 months. Then, completely out of the blue, I felt almost an electric shock in bed one night and spiralled into the most awful depression and panic imaginable. After the Sertraline failed to work I was on the verge of admitting myself to a psych ward. It was truly the most painful experience imaginable. My GP prescribed Mirtazapine as an attempt to pull me back into balance, and I can honestly say that in about 2 weeks I had recovered. I cannot speak of the difference it made. Utterly unbelievable. The best benefit was its sleep inducing effects, as I'd always stay up all night in panic."