Children and adolescents. Mirtazapine should normally not be used for children and adolescents under 18 years because efficacy has not been demonstrated. Mirtazapine is an antidepressant. The way this medication works is still not fully understood. It is thought to positively affect communication between nerve cells in the central nervous system and/or restore chemical balance in the brain. Find patient medical information for Mirtazapine Oral on WebMD including its uses, side effects and safety, interactions, pictures, warnings and user ratings. Mirtazapine is an antidepressant medicine. This page explains what mirtazapine is used for, how it works, its risks and whether there are any other treatment options available in its place. Easy-to-read patient leaflet for Mirtazapine Tablets. Includes indications, proper use, special instructions, precautions, and possible side effects. Please do not be worried by the side effects listed on this page. Many people take mirtazapine without any side effects or only a few mild side effects. Remeron (mirtazapine) is a tetracyclic antidepressant used to treat depression. Remeron is available in generic form (mirtazapine). Remeron has been used to treat nausea, anxiety, post traumatic stress syndrome, and used as an appetite stimulant. Mirtazapine is used to treat depression. Mirtazapine is in a class of medications called antidepressants. It works by increasing certain types of activity in the brain to maintain mental balance. Mirtazapine is indicated for the treatment of major depressive disorder. Learn about side effects, drug interactions, dosages, warnings, and more. Mirtazapine (Remeron, Remeron SolTab) is an oral medication used to treat depression. Learn about side effects, warnings, dosage, and more.