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How Much Caffeine Is in McDonald's Sweet Tea?

author image Laura Michele Oliver
Laura Michele Oliver received her bachelor's degree in nutrition from Auburn University. She served as a dietetic intern at Rush University Medical Center in Chicago, where she also graduated with a Master of Science in clinical nutrition. She now works as a registered dietitian in Brooklyn, N.Y.
How Much Caffeine Is in McDonald's Sweet Tea?
A close-up of a large beverage cup on a table in a McDonalds restaurant. Photo Credit: Mario Tama/Getty Images News/Getty Images

Caffeine is a stimulant that can lead to anxiety and digestive problems if over-consumed. For healthy adults, 200 to 300 milligrams of caffeine a day, or two to three cups, is safe. Common caffeine sources include coffee, soda and tea, including sweet iced tea from fast food restaurants such as McDonald's.

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Caffeine Content

McDonald’s sweet tea is made from black tea, which contains 47 milligrams of caffeine per one cup. A large serving size contains 30 fluid ounces and 180 milligrams of caffeine, which is within the range of moderate caffeine consumption considered safe. A small iced tea, or 16 fluid ounces, has 96 milligrams of caffeine, and a medium, or 21 fluid ounces, has 126 milligrams of caffeine.

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