Osco Drug and Sav-on Drugs were the names of a pair of chain pharmacies that operated in the United States. Osco Drug was founded by the Skaggs family. Alpha Beta grocery store was purchased by American Stores in 1961. Skaggs Drug Centers bought American Stores in 1979 and assumed the American Stores name. Sav-on Drugs was a California-based pharmacy chain that was acquired by Osco's parent company in 1980. Both Osco and Sav-on stores eventually came under the ownership of American Stores, then Albertsons, and finally SuperValu before the stores were sold off.