Webstarbucks drinks’ caffeine content. You will find more information about each drink on starbucks’ menu listed below, including its caffeine and sugar, content and serving size. Compared with nonconsumers or consumers of less. 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. Webthis guide offers a straightforward guide into the starbucks caffeine content of your favorite starbucks beverages. From the robust espresso shots to the chilled.