Did you know that some drugs affect men and women differently? For instance, women are often prescribed only half the dose that men take of the sleep medication Ambien. Race and ethnicity also make a difference. One type of drug commonly used to treat high blood pressure, ACE inhibitors, has been shown to be less effective in African American patients than in white patients. FDA’s Drug Trials Snapshots Summary Report provides a yearly average of the diversity of participants in the clinical trials for novel drugs approved in 2015 and 2016.