According to a recent study:

• Almost 70% of Americans are on at least one prescription drug, and more than half take two
• 20% of patients are on five or more prescription medications
• The percentage of people who took at least one prescription drug in the past month increased from 44% in 1999-2000 to 48% in 2007-08

Source: Nearly 7 in 10 Americans Take Prescription Drugs, Mayo Clinic, Olmsted Medical Center Find," Mayo Clinic Press Release, June 19, 2013, http://www.mayoclinic.org/news2013-rst/7543.html