Anxiety
"I was prescribed this for anxiety, depression and sleep problems (with my fibromyalgia)  after several trial and errors with other medication. I&#039;ve been on it for three weeks now and it has no effect whatsoever on me. The doctor took me off sertraline and replaced it with mirtazapine.  I sleep about 3/4 hours every other night so I&#039;ve doubled my dosage from 15mg to 30 mg after reading people&#039;s comments. I took the dose 3 hours ago and nothing :( hope it works better for others! (Uk)"