Caffeine helps to improve concentration and increase alertness. One 250-ml can of Red Bull Energy Drink contains 80 mg of caffeine. The 80 mg of caffeine contained in one 250-ml can of Red Bull ...

Energy drinks like Monster, Red Bull, and even those tiny 5-Hour Energy shots can be considered some of the unhealthiest drinks on the planet. Cassondra Reynolds' husband was a healthy man.

Meanwhile, the Tropical Citrus Iced Energy, at 24 ounces, contains 180 milligrams of caffeine for $5.75. I'm not one for ...