The investigation looked at prices at 200 pharmacies in nine communities for 11 medications not currently listed on the site. The investigation found price differences of nearly $100 for prescriptions of Ambien (zolpidem, Sanofi-Aventis) in Detroit and Lansing.
An investigation of prescription drug prices at selected pharmacies by Michigan Attorney General Mike Cox found wide differences, leading to a call to expand the state's Department of Community Health's drug price comparison Web site (