What is the primary use of Mirtazapine (Remeron) in psychiatric treatment?

Mirtazapine, known by the brand name Remeron, is primarily utilized in psychiatric treatment for its effectiveness in increasing appetite and managing insomnia, making option B the correct choice. This medication is classified as a tetracyclic antidepressant and works by enhancing norepinephrine and serotonin levels in the brain, which can help improve mood, as well as stimulate appetite.

One of its well-documented side effects is significant sedation, which can benefit individuals who struggle with sleep disturbances, such as insomnia. Additionally, Mirtazapine is often prescribed to patients who are experiencing weight loss or eating disorders, as it can promote weight gain by enhancing appetite.

While the other options reference important aspects of mental health management—such as anxiety disorders, psychotic symptoms, and substance withdrawal—Mirtazapine is not primarily indicated for these uses. It does not typically serve as a first-line treatment for anxiety disorders, nor is it used in the reduction of psychotic symptoms. Regarding substance withdrawal, antidepressants like Mirtazapine do not directly alleviate withdrawal symptoms and are generally not the first choice in that context. Therefore, Mirtazapine's primary role in treatment is clearly centered around appetite stimulation and addressing insomnia.