What are some hidden sources of caffeine?

Carol Ash, DO
Pulmonary Disease
There are many hidden sources of caffeine in the foods and beverages we consume, like non-cola beverages, chocolate and coffee-flavored products and energy waters. Watch internist and sleep expert Carol Ash, DO, reveal sneaky sources of caffeine. 
Some hidden sources of caffeine include lighter-colored colas, some ice creams, chocolate, and even pain relievers; there is also a natural form called guarana. Watch me explain these caffeine sources to be aware of.