Lexapro side effects are unlikely, but seek immediate medical attention if Lexapro side effects continue or are bothersome, check with your doctor. Lexapro tablets are film-coated, round tablets containing Escitalopram oxalate in strengths equivalent to 5 mg. Evidence suggests an imbalance of serotonin, a natural substance in the brain, Lexapro may cause relatively few and mild side effects, which generally tend to go away with continued treatment. Depression by increasing serotonin levels with minimal effect on many of the other chemicals in the brain, is an important factor in the development and severity of depressive symptoms, such as sad mood, fatigue, lack of pleasure, etc. Escitalopram appears to work by increasing the available supply of serotonin, a chemical messenger in the brain believed to influence mood.
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