Common side-effects of mirtazapine include dizziness, blurred vision, sedation, somnolence, malaise, increased appetite, weight gain (as a result of increased appetite), dry mouth, constipation, and joint and muscle pain. Less common side-effects that tend to occur more often at higher doses include restlessness, irritability, aggression, apathy, anhedonia, difficulty swallowing, shallow breathing, decreased body temperature, pupil constriction, nocturnal emissions, spontaneous orgasms, impaired balance, restless legs syndrome, and vivid dreams.[2][46][47][48] Rare and potentially serious adverse reactions of mirtazapine include allergic reaction, edema, fainting, seizures, bone marrow suppression, myelodysplasia, and agranulocytosis.[14]
Mirtazapine is not considered to have a risk of many of the side-effects often associated with other antidepressants like the SSRIs, and may actually improve certain ones when taken in conjunction with them.[2][40] These adverse effects include decreased appetite, weight loss, insomnia, nausea and vomiting, diarrhea, urinary retention, increased body temperature, excessive sweating, pupil dilation, and sexual dysfunction.[2][40]
In general, some antidepressants, especially SSRIs, can paradoxically exacerbate some patients' depression or anxiety or cause suicidal ideation.[49] Despite its sedating action, mirtazapine is also believed to be capable of this, and for this reason in the United States and certain other countries it carries a black box label warning of these potential effects.

I think the best one is "spontaneous orgasms".

This post has been edited by th3.h04rd3r: Sep 19 2013, 10:40 AM