An article from the Los Angeles Times, brings the story of a teenager who was in the habit of drinking several Redline energy drinks a day, and subsequently suffered severe inflammation, bleeding and ulcerations the small intestine:
Those who love caffeinated beverages such as coffee probably, at one time or another, have experienced the heartburn they can cause. This is a known effect of caffeine. In excess, such drinks can irritate the lining of the gut, leading to severe pain. As with this teenager, they can tear you up on the inside.
What you need to know:
Energy drinks are a huge business in the US, with revenues of over $2.5 Billion a year. Their main ingredient is caffeine. An 8 oz cup of coffee has around 100mg of coffee, so does Red Bull. But Redline has more than twice as much – 250mg! A small warning on the can says only one should be consumed per day
What to look for at the supermarket:
Some drinks are sold only at drugstores. Find the drink with an acceptable level of caffeine for you. Look for usage warnings on the labels.