(NBC) - As energy drink use increases so does the number of visits to the emergency room.
A study recently released by the Substance Abuse and Mental Health Services Administration found a sharp increase in emergency room visits due to energy drinks - from just over 1,000 in 2005 to 13,000 in 2009.
Over 40 percent of the patients had combined energy drinks with alcohol or prescription drugs. Fifty-six percent had the energy drink by itself.
Symptoms included rapid heartbeat, dizziness, feeling faint and headaches.
The American Beverage Association says the report did not account for the overall health of the people who went to the emergency room and the energy drink cases only made up a small portion of the millions of emergency room visits each year.