(CBS) A new government report is raising more concerns about popular energy drinks.

The findings show more people are ending up in the emergency room after drinking them.

Energy drinks are super popular especially with young adults.

It kinda gives me a boost." College junior Allen Abrishame works late nights at a restaurant, so he uses them to stay awake.

"During the middle of the shift, I'll get tired and knock one down, Allen said.

But the drinks are landing more and more people in the emergency room.

The first question I ask when I see a young person with a rapid heartbeat and anxiety is have you taken any energy drinks? Dr. Stephen Meldon, vice chair of Emergency Services Institute at Cleveland Clinic said.

A report from the Substance Abuse and Mental Health Services Administration says ER visits doubled in the last four years from about 10,000 to more than 20,000.

Doctors say those high doses of caffeine and other additives can cause a number of reactions.

Said Dr. Stephen Meldon, It's really going to be symptoms of taking a stimulant, so you're going to have nervousness, rapid heart rate, anxiety.

In recent years sales have soared for the top three energy drink companies, Red Bull, Monster and Rockstar. Marketers main target is young people.

The government report found 18-25 year olds were the most common age group to need emergency treatment.

"I get really jittery, I get really hyper, it makes me want to pace and I just don't feel good, and once the energy drink wears off, I have a really bad headache, Victoria Benson, a freshman studying nursing said.

The American Beverage Association criticizes the report saying many of those who end up in the ER are also consuming alcohol or drugs.

The FDA is already investigating the safety of energy drinks after a number of deaths were linked to them.

(Copyright 2013 Sinclair Broadcasting Group)

FDA Investigating Safety Of Energy Drinks