In this neck of the woods, we call it 'juice' as a generic term. Sometimes, we'll use the specific as suits: 'can of Coke' or 'can of Pepsi' etc.
Years ago, when I was a kid, it was 'ginger'. We collected ginger bottles and took them to the local shop to exchange them for sweets. But no idea why that term became common and these days it's almost never heard as juice has replaced it.
LabRat
