Over the counter supplements, including vitamins, sexual enhancements and weight loss aids, are being blamed for 23,000 visits to US emergency rooms each year, according to a decade-long study this week. The findings published in the New England Journal of Medicine are based on reports from a nationally representative sample of 63 emergency departments from 2004 through 2013. Weight loss aids were a leading culprit in this age group, causing more than half of emergency room visits, commonly for heart related symptoms including palpitations, chest pain, or irregular heartbeat.