Can you handle the "World's Strongest Coffee?"

A new coffee claims it's the most potent in the world. 

"Black Insomnia Coffee" has 702 mg of caffeine inside a 12 oz cup. Researchers with the Mayo Clinic say the coffee may not be safe. They recommend most healthy adults can't consume more than 400 mg a day.

Previously, "Death Wish Coffee" held the title as the most potent with around 660 mg in a 12 oz cup. 




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