Side effects of<unk>  are dose-dependent. Very common (>10% incidence) adverse effects include sleepiness, tiredness, headache, and stomach ache. Common (1-10% incidence) adverse effects include decreased appetite, depressed mood, anxiety, irritability, mood changes, insomnia, nightmares, dizziness, lack of energy, slowed heart beat, low blood pressure, feeling faint when standing quickly, vomiting, nausea, diarrhea, constipation, dry mouth, urinary incontinence, and rashes. Typical side effects such as fatigue, irritability and stomach upset can take a week or two to subside. Increases in dosage can have the same adjustment period.
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