Noradrenergic and specific serotonergic antidepressant

Noradrenergic and specific serotonergic antidepressants (abbreviated: NaSSAs) are a relatively new class of antidepressants. They are thought to work by blocking presynaptic alpha-2 adrenergic receptors that normally inhibit the release of the neurotransmitters norepinephrine (noradrenaline) and serotonin. This results in increases in both noradrenergic and specific serotonergic transmission.

Examples of NaSSAs include:


 * Mirtazapine (Remeron®, Zispin®, Avanza®, Norset®, Remergil®, Axit®)

NaSSAs are said to have fewer side effects than tricyclic antidepressants and selective serotonin reuptake inhibitors (SSRIs) while being equally effective. In particular, it is said that the sexual dysfunction that is a relatively common side effect of SSRIs occurs significantly less often during treatment with Mirtazapine.