Osco Drug is a chain of pharmacy stores which operate uner Supervalu Pharmacies. Most Oscos currently can be found in Jewel supermarkets. Since 2006, Osco is a wholly owned subsidiary of Supervalu Pharmacies of Eden Prairie, Minnesota-based Supervalu. The company at its height operated Osco Drug, Osco Pharmacy, Sav-on Drugs, and Sav-on Pharmacy.