Tabulated list of undesirable effects: Undesirable effects known for SSRIs and also reported for escitalopram in either placebo-controlled clinical studies or as spontaneous post-marketing events are listed as follows by system organ class. (See table.)

Class effects: In patients 50 years of age and older an increased risk of bone fractures in patients receiving SSRIs and TCAs were observed. The mechanism leading to this risk is unknown.
Discontinuation symptoms seen when stopping treatment: Discontinuation of SSRIs/SNRIs (particularly when abrupt) commonly leads to discontinuation symptoms. Dizziness, sensory disturbances (including paraesthesia and electric shock sensations), sleep disturbances (including insomnia and intense dreams), agitation or anxiety, nausea and/or vomiting, tremor, confusion, sweating, headache, diarrhoea, palpitations, emotional instability, irritability, and visual disturbances are the most commonly reported reactions. Generally these events are mild to moderate and are self-limiting, however, in some patients they may be severe and/or prolonged. It is therefore advised that when escitalopram treatment is no longer required, gradual discontinuation by dose tapering should be carried out (see Dosage & Administration and Precautions).
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