Characteristics, Preferences and Health Care Utilization in Patients Using a Dietary Supplement for Improving Sleeping Disturbances: Results from an Explorative Online Survey.

A significant proportion of participants reported a substantial reduction in pharmaceutical drug use and health care utilization. While these self-reports lack an adequate control, they are still real consumer experiences, and the large beneficial effects - whether placebo or not - explain the popularity of such supplements and their therapeutic potential in sleeping disorders.