While the recommended daily limit of caffeine is 400 mg, keep in mind the amount of sugar you'd be consuming to reach this quota with a Rockstar energy drink. Next up, we have Reign Energy.

One of caffeine’s primary sites of action in the human body is a stimulating effect on cognitive functions. One 8.4 fl. oz. can of Red Bull Energy Drink contains 80 mg of caffeine. The 80 mg of ...

Most people get their caffeine from coffee ... Is it safe to use energy drinks? First, we need to look at what the FDA considers a safe dose. For adults, 400 mg per day is considered safe. The agency ...

Many mainstream energy drinks that have been on U.S. shelves for decades—like Rockstar, Red Bull, and Monster—contain roughly 10 mg of caffeine per ounce. That’s roughly on par with the ...

The number of calls to U.S. poison centers about children consuming energy ... caffeine-related complications. RELATED: Are sports drinks a healthy choice for teens? For adults, up to 400 mg ...