Webdrinking two to three cups of coffee or up to three cups of tea a day was the sweet spot, the researchers found. People who consumed about 200 to 300 milligrams. Compared with nonconsumers or consumers of less than. Webstarbucks has dropped a new line of summery drinks that contain about the same amount of caffeine as a typical cold brew. Webcomplete caffeine content of starbucks drinks. Coffee, tea, refreshers, frappuccinos, iced coffee, via, and bottled coffee. Uk and europe amounts too. “we take great offence when someone says that we're a coffee. But the rule about misleading appearances applies. A morning cup of coffee may do more than just perk you up, according to new research. Moderate amounts of caffeine intake — defined as one to three cups.