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A can of Monster has significantly more caffeine than ♠ a can of Red Bull, with about 160 mg per can. However, one can of Monster is bigger than one ♠ can of Red Bull. Red Bull contains about 8.4 ounces of liquid and Monster contains about 17 ounces of liquid.

Which ♠ energy drink has the most caffeine? Know this before next sip.

Instead of reading through the nutritional value of every energy ♠ drink option, we've compiled a list of the 10 worst energy drinks for you: