Consumer Reports tests energy drinks

Energy drinks! Everyone from Tim Tebow to 50 Cent and Joan Rivers are advertising
them. With their Facebook pages and Internet video campaigns, manufacturers
specifically target young people. But Consumer Reports says you have to be careful
how much caffeine you drink. It can quicken your pulse, cause abnormal heart rhythms,
keep you from sleeping well, and elevate blood pressure.

Consumer Reports analyzed the caffeine content of 27 top-selling energy drinks,
testing three samples each. Although some list the amount of caffeine on the package,
they are not required to, and Consumer Reports found some of the energy drinks
underestimated the amount of caffeine listed on the label by 20 percent or more.

So how much caffeine do energy drinks contain? In Consumer Reports’ tests, it varied
widely. For example:
FRS Healthy Energy averaged 17 milligrams per container.
Red Bull and SK Street Kings Energy averaged around 80 milligrams.
5-Hour Energy averaged 215 and 5-Hour Energy Extra Strength—242.

Most healthy adults can consume up to 400 milligrams of caffeine a day. So Consumer
Reports says for many people, an occasional energy drink is probably fine. Or you can
drink regular coffee. An 8-ounce cup contains roughly 100 milligrams of caffeine.

Consumer and scientific groups have urged the Food and Drug Administration to
require companies to disclose caffeine levels, but the agency says it lacks the authority
to do so. Many energy drinks do carry warnings that they are not for children, women
who are pregnant or nursing, or people sensitive to caffeine.