"Caffeinated" means that something contains or has been infused with caffeine, a natural stimulant found in beverages like coffee and tea. Full definition
Younger children shouldn't drink caffeinated beverages on a regular basis. (mayoclinic.org)
A major, multi-state study conducted by researchers at the University of Minnesota and the U.S. Centers for Disease Control and Prevention linked later high school start times to significant decreases in teen substance abuse, depression, and consumption of caffeinated drinks. (startschoollater.net)
Research from the Dana - Farber Cancer Institute tested the effects of drinking caffeinated coffee on nearly 1,000 bowel cancer patients who had undergone chemotherapy and surgery. (liveinthenow.com)