Another energy beverage is under scrutiny by the FDA. 

According to the New York Times, FDA officials have received reports of 13 deaths over the past four years that have cited possible involvement of 5-Hour Energy.

In October, the FDA said it had received filings of five death mentioning possible involvement of the energy drink, Monster.

The Times states that the filing of an incident report with the F.D.A. does not mean that a product was responsible for a death or an injury or contributed in any way to it, saying that such reports can be fragmentary and difficult to investigate.

Living Essentials, the distributor of 5-Hour Energy, in a statement said the product was safe when used as directed and that it was
 "unaware of any deaths proven to be caused by the consumption of 5-Hour Energy."

A recent article by Consumer Reports reported that the two-ounce bottle of 5-Hour Energy contained  high levels of certain B vitamins, taurine and about 215 milligrams of caffeine.  In comparison, an eight-ounce cup of coffee can contain from 100 to 150 milligrams of caffeine.

The Times also reports that  the Substance Abuse and Mental Health Services Administration, reported last year that more than 13,000 emergency room visits in 2009 were associated with energy drinks alone.