Learn how much caffeine Starbucks' bottled and canned beverages have. Find out which pack the biggest boost, and which are ...

A war is always brewing for your coffee dollars between Starbucks, McDonald's ... We recorded the prices and compared the size and caffeine content of each cup. The results may surprise you.

A medium cappuccino at Costa Coffee for example has 325mg of caffeine - five times more than Starbucks ... the extent of the variation of caffeine content. I had a latte once from McDonalds ...

These tiny bottles, or "shots," contain nearly the same amount of caffeine as a cup of Starbucks, which is closer to four cups of regular coffee. Each 2-ounce shot has about 215 mg of caffeine.