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Mirtazapine is sometimes described as a noradrenergic and specific serotonergic antidepressant (NaSSA), [11] although the actual evidence in support of this label has been regarded as poor. [17] It is a tetracyclic piperazine-azepine. [85] Mirtazapine has antihistamine, α 2-blocker, and antiserotonergic activity.
Chemical structure of the prototypical NaSSA mirtazapine (original brand name Remeron). Noradrenergic and specific serotonergic antidepressants (NaSSAs) are a class of psychiatric drugs used primarily as antidepressants. [1]
Besides mirtazapine, they also block the α 1-adrenergic receptor [citation needed]. Conversely, whereas TCAs have relatively low affinity for the α 2 -adrenergic receptor , mianserin and mirtazapine potently antagonize this receptor, and this action is thought to be involved in their antidepressant effects [ citation needed ] .
Another possible problem with antidepressants is the chance of antidepressant-induced mania or hypomania in people with or without a diagnosis of bipolar disorder. Many cases of bipolar depression are very similar to those of unipolar depression. Therefore, the person can be misdiagnosed with unipolar depression and be given antidepressants.
The tetracyclic antidepressants mianserin and mirtazapine are α 2 blockers, although their efficacy as antidepressants may come from their activity at other receptor sites. [citation needed] Mechanistically, α 2 blockers increase adrenergic, dopaminergic and serotonergic neurotransmitters and induce insulin secretion, decreasing blood sugar ...
An alleged Chinese spy who forged a close relationship with Prince Andrew has been identified by a British court, the latest twist in a case that has shone a light on Beijing’s influence inside ...
Key symptoms include excessive anxiety about multiple events and issues, and difficulty controlling worrisome thoughts, that persists for at least 6 months. Antidepressants provide a modest-to-moderate reduction in anxiety in GAD, [25] and are superior to placebo in treating GAD. The efficacy of different antidepressants is similar.
A review that considered berberine’s effects on heart health found some studies supporting this claim, but due to the high risk of bias, the researchers recommended more clinical trials be ...