How does Dr. Pepper dissolve a nail?

I think this is an urban legend - a twist on the coke will dissolve a nail/tooth because it contains a very small amount of both citric acid and phosphoric acid.

Pop contains such a small amount, it won't corrode a nail. Sounds like the email that passed by my desk that was Word for Word the same as the coke story, except it had the Word Dr Pepper inserted wherever Coke should have been.

Check out this great link. The writer did an experiment to see if the story was true. He documents the steps he took and the results:

http://joshmadison.com/article/will-coke-dissolve-a-nail-experiment/