The federal government is investigating claims that 13 people have died over the past four years after drinking 5-Hour Energy.
Another 33 hospitalizations linked to the popular energy shot were reported in that same time period, according to the Food and Drug Administration.
More from GlobalPost: Energy drink makers face NY health probe
"If someone is to use multiple cans, now is when we start to see some of the side effects," Dr. Sean Patrick Nord, USC Director of the Section of Toxicology, told ABC News. "You're getting astronomical amounts, 30 to 40 cups of coffee."
In a statement, FDA officials said they will take action if the deaths can be directly linked to the drink.
More from GlobalPost: Teen deaths linked to Monster Energy drinks in new report
That could include forcing the company to take the drinks off the market, The Associated Press reported.
A spokeswoman for the company that makes the product, Michigan-based Living Essentials, LLC, told the AP the energy shot is "intended for busy adults" and is not marketed as a beverage.
Elaine Lutz said the company is not aware of any deaths proven to have been caused by their product.
The new FDA filings mark the second time in a month that the agency has confirmed it is investigating energy drinks.
In October, the FDA said Monster Energy, another popular drink that contains even more caffeine, was allegedly linked to five deaths, CBS News reported.
One victim, 14-year-old Anais Fournier of Maryland, allegedly died after drinking two Monster Energy drink beverages within 24 hours. Her parents are now suing the beverage company.