What's in energy drinks, anyway?

Energy drinks are usually formulated to give the consumer an energy jolt by using a combination of methylxanthines, B vitamins, and exotic herbal ingredients. Energy drinks commonly include caffeine, guarana (extracts from the guarana plant), taurine, various forms of ginseng, maltodextrin, inositol, carnitine, creatine, glucuronolactone and ginkgo biloba. Some contain high levels of sugar, while most brands also offer an artificially sweetened version. Often manufacturers add a very small dose of a powerful stimulant such as carnitine, but the doses of these add-ins are usually so small that any added "boost" is purely psychological. Despite exotic formulations, generally the energy boost in these drinks is delivered via the whopping dose of common caffeine.

A dose of caffeine strong enough to affect the heart rate in some people,some studies suggest they can cause psychotic episode in people with mental illness.

I think it is time to urge the government to have warning labels on the bottles and to do more study on the effects on the body. What are your thoughts.