Merasal Adverse Reactions

Depressed patients display a number of symptoms that are associated with the illness itself. It is therefore sometimes difficult to ascertain which symptoms are a result of the illness itself and which are a result of mirtazapine treatment.
The most commonly reported adverse reactions, occurring in more than 5% of patients treated with mirtazapine in randomised placebo-controlled trials (see as follows) are somnolence, sedation, dry mouth, weight increased, increase in appetite, dizziness and fatigue.
All randomised placebo-controlled trials in patients (including indications other than major depressive disorder), have been evaluated for adverse reactions of mirtazapine. The meta-analysis considered 20 trials, with a planned duration of treatment up to 12 weeks, with 1501 patients (134 person years) receiving doses of mirtazapine up to 60mg and 850 patients (79 person years) receiving placebo. Extension phases of these trials have been excluded to maintain comparability to placebo treatment.
The table as follows shows the categorized incidence of the adverse reactions, which occurred in the clinical trials statistically significantly more frequently during treatment with mirtazapine than with placebo, added with adverse reactions from spontaneous reporting. The frequencies of the adverse reactions from spontaneous reporting are based on the reporting rate for these events in the clinical trials. The frequency of adverse reactions from spontaneous reporting for which no cases in the randomised placebo-controlled patient trials were observed with mirtazapine has been classified as 'not known'. (See table.)

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In laboratory evaluations in clinical trials transient increases in transaminases and gamma-glutamyltransferase have been observed (however associated adverse events have not been reported statistically significantly more frequently with Mirtazapine than with placebo).
Paediatric population: The following adverse events were observed commonly in clinical trials in children: Weight gain, Urticaria, Hypertriglyceridaemia.
See also Pharmacology: Pharmacodynamics under Actions.