Mirtazapine

Mirtazapine, sold under the brand name Remeron among others, is an atypical antidepressant which is used primarily in the treatment of depression. In addition to its antidepressant properties, mirtazapine has anxiolytic, sedative, antiemetic, antiallergenic, and appetite stimulant effects and is sometimes used in the treatment of anxiety disorders, insomnia, nausea and vomiting, and to produce weight gain when desirable. It is taken by mouth.

A 2018 Cochrane Review reported that mirtazapine is unlikely to substantially reduce pain in people with fibromyalgia. A small number of people may experience some improvement (moderate pain relief, better sleep). Specifically, mirtazapine reduced pain by 30% or more in five out of 10 people but it was not better than placebo in reducing fatigue, depression, or improving health‐related quality of life. They found no benefit of mirtazapine over placebo for pain relief of 50% or greater.

Uses
Sleep aid for fibromyalgia or for insomnia.

Side Effects
More commonly reported ones are: Weight gain

More commonly reported ones in children are:

Less commonly reported ones are:

Notable studies

 * 2017, Mirtazapine for fibromyalgia in adults (Abstract)