Which soft drink is the oldest in US?

While there's some debate about the exact date, it's widely accepted that Dr Pepper was first formulated in 1885 by Charles Alderton, a pharmacist in Waco, Texas.

While other drinks like Coca-Cola (1886) and Pepsi-Cola (1893) are also very old, Dr Pepper holds the title of being the oldest continuously produced soft drink in the US.