Lexapro blood pressure: "This medication may cause dizziness or drowsiness. By increasing the available supply of serotonin, a chemical messenger in the brain that may become unbalanced and cause depression or anxiety. Lexapro affects chemicals in the brain believed to influence mood. In the brain, Lexapro may cause relatively few and mild side effects, which generally tend to go away with continued treatment. Lexapro does cause problems when you are operating a vehicle or driving heavy machinery. Lexapro is used to treat depression. 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. If you experience Lexapro side effects continue or are bothersome, check with your doctor. Lexapro is an astonishing antidepressant medication that can help many types of depression and helps depressed individuals live the kind of life that non-depressed people take for granted."