But one is marketed as a food/beverage and the other as a dietary supplement, which means they are regulated in different ways by the Food and Drug Administration.
If the product is marketed as a dietary supplement, the ingredients aren't necessarily reviewed for safety or efficacy by the FDA. They carry a "supplement facts" label and include a disclaimer that reads: "These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease."
Products sold as dietary supplements are not supposed to be marketed alongside conventional foods and beverages, according to 2009 FDA draft guidance that is not yet finalized. But when a Tribune reporter walked into a local drugstore, Java Monster and Starbucks Doubleshot were sitting side by side in a cooler.
The FDA is concerned about that blurred line because it's seeing an increase in the number of beverages marketed as dietary supplements. To avoid a safety review, some energy drink manufacturers market their products as dietary supplements and they may contain unapproved ingredients, the FDA said.
Michael McGuffin, president of the American Herbal Products Association, said he believes consumers don't make purchasing decisions based on whether something is labeled a food or a dietary supplement; they simply want it to serve its purpose. But others say it's important for consumers know the difference because supplements are subject to fewer pre-market approval requirements than foods or drugs.
See if you can guess which of these products is a food and which is a supplement:
Java Monster Loca Moca Coffee + Energy: Supplement
Starbucks Doubleshot Energy + Coffee: Food
Red Bull Energy Drink: Food
Rockstar Energy Drink: Supplement
EAS Myoplex nutrition drink: Food
FRS Healthy Protein drink: Supplement