I bought 4 cartons of diet Dr Pepper in bottles, that’s the only type cola I buy. When I put them in refrigerator and got cold and opened one up to drink it didn’t have any flavor to it , it was flat, no fizz when I opened it! I can’t drink them that way. I don’t know if they were just old and out of date or had been too hot or what was wrong with them. I’m hesitant about even buying them now. Either return my money or replace with more Dr Pepper drinks! Thank you!