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Mirtazapine is a very strong H 1 receptor antagonist and, as a result, it can cause powerful sedative and hypnotic effects. [11] A single 15 mg dose of mirtazapine to healthy volunteers has been found to result in over 80% occupancy of the H 1 receptor and to induce intense sleepiness. [92]
It is a tetracyclic antidepressant (TeCA). Mianserin is closely related to mirtazapine, both chemically and in terms of its actions and effects, although there are significant differences between the two drugs (for example, its higher noradrenergic activity and lower 5-HT3 receptor antagonism). [ 7 ]
Noradrenergic and specific serotonergic antidepressants (NaSSAs) are a class of psychiatric drugs used primarily as antidepressants. [1] They act by antagonizing the α 2 -adrenergic receptor and certain serotonin receptors such as 5-HT 2A and 5-HT 2C, [1] but also 5-HT 3, [1] 5-HT 6, and/or 5-HT 7 in some cases.
Mirtazapine is reported to have fewer sexual side effects, most likely because it antagonizes 5-HT 2 and 5-HT 3 receptors and may, in some cases, reverse sexual dysfunction induced by SSRIs by the same mechanism.
They have largely been replaced by z-drugs (zopiclone, zolpidem) and atypical antidepressants (trazodone, mirtazapine) as first line treatment for insomnia. [8] Common side effects include drowsiness, motor and cognitive impairment, lethargy, confusion, euphoria, and dizziness. [8]
Dextroamphetamine is the dextrorotatory, or 'right-handed', enantiomer and exhibits more pronounced effects on the central nervous system than levoamphetamine. Pharmaceutical dextroamphetamine sulfate is available as both a brand name and generic drug in a variety of dosage forms.
The most common side effects are dry mouth, drowsiness, dizziness, constipation, and weight gain. Glaucoma , liver toxicity and abnormal heart rhythms are rare but serious side effects. Blood levels of amitriptyline vary significantly from one person to another, [ 17 ] and amitriptyline interacts with many other medications potentially ...
Alpha-2 blockers (or α2 blockers) are a subset of the alpha blocker class of drugs and are antagonists to the α 2 adrenergic receptor. They are mainly used in research, having found limited clinical application in human medicine. They are extensively used in veterinary medicine to reverse the effects of alpha-2 agonist drugs used as sedatives ...