Half the patients were given the medication and the other half received a 'sugar pill'.
heavily 'sugared' coffee/tea [=coffee/tea with a lot of sugar added to it]
politicians getting money from their corporate 'sugar daddies'
(..) A political meeting! How can you go to a political meeting... ...after what I've been through this afternoon? Oh, sugar! You're more scared than hurt. Nobody cares about me. You all act as though it was nothing at all. The men talk, talk, talk about protecting our women... (..)1939 Gone with the Wind
(..) What are you running, a charitable institution? Go back to the store, then go home and take your medicine. You're not looking very well. But, sugar, shouldn't you come home with me? Great balls of fire. Don't bother me anymore, and don't call me sugar! All right, all right. Good night, Ashley. (..)1939 Gone with the Wind