Complex sentence: Mirtazapine (brand names: Avanza, Axit, Calixta, Mirtaz, Mirtazon, Remeron, Zispin) is a noradrenergic and specific serotonergic antidepressant (NaSSA) introduced by Organon International in the United States in 1996, and is used primarily in the treatment of depression.
Split into simpler sentences: Mirtazapine (brand names: Avanza, Axit, Calixta, Mirtaz, Mirtazon, Remeron, Zispin) is an atypical antidepressant with Noradrenergic and specific Serotonergic activity. Mirtazapine is a noradrenergic and specific serotonergic antidepressant (NaSSA) introduced by Organon International in the United States in 1996, and is used primarily in the treatment of depression.