How much caffeine is really in your morning coffee?

Starbucks has TWICE as much as McDonald's, reveals list of top brands

From:  Daily Mail

A cup of Starbucks coffee is packed with more than twice as much caffeine as a cup of McDonald's, according to a breakdown of caffeine content from major brands.

Thrillist compiled data from two sources, the Center for Science in the Public Interest and EnergyFiend.com, to come up with a list of the most caffeinated coffee brands.