In our town Gibsons became Pamida.
Specific memory was a store in Muscatine called Stiles Drug. More of an everything store but yes, it did have a pharmacy. When I was a kid and candy bars were 5 cents each, you could get them there 3/12 cents. (I feel like the guy on Seinfeld. "A Hershey bar FOR A NICKEL!)
Ah yes, Gibson's became Pamida -- I saw refs to Pamida earlier the thread and I didn't make the connection.