At the conclusion of the trial, nearly one-third (32.9%) of the patients receiving citalopram showed improvement in symptoms, but this was not significantly different from the 34.2% of patients who showed symptom improvement with placebo. Further, patients receiving citalopram were more likely to experience side effects, including nightmares, increased energy level, impulsiveness, decreased concentration, hyperactivity, diarrhea, insomnia, and dry skin than patients receiving placebo.