Find Information About:

Drugs & Supplements

Get information and reviews on prescription drugs, over-the-counter medications, vitamins, and supplements. Search by name or medical condition.

Pill Identifier

Pill Identifier

Having trouble identifying your pills?

Enter the shape, color, or imprint of your prescription or OTC drug. Our pill identification tool will display pictures that you can compare to your pill.

Get Started

My Medicine

Save your medicine, check interactions, sign up for FDA alerts, create family profiles and more.

Get Started

WebMD Health Experts and Community

Talk to health experts and other people like you in WebMD's Communities. It's a safe forum where you can create or participate in support groups and discussions about health topics that interest you.

  • Second Opinion

    Second Opinion

    Read expert perspectives on popular health topics.

  • Community


    Connect with people like you, and get expert guidance on living a healthy life.

Got a health question? Get answers provided by leading organizations, doctors, and experts.

Get Answers

Sign up to receive WebMD's award-winning content delivered to your inbox.

Sign Up

Soft Drinks Surpass Tea as Second Most Popular Caffeine Source

Dec. 28, 2004 -- Coffee is still the top choice for fulfilling caffeine cravings, but a new study suggests that Americans' caffeine sources may be shifting.

Researchers found that soft drinks have surpassed tea as the second leading source of caffeine for adult men and women while remaining the top source of caffeine for children.

With the proliferation of coffee shops on every corner, it's no surprise that the study shows that more Americans of all ages are getting a caffeine buzz, with nearly 90% of adults and 76% of children getting caffeinated on a daily basis.

But researchers also suggest that the strength of that buzz may be waning as the average daily intake of caffeine per person is on the decline.

Caffeine Sources Shifting

In the study, which appears in the January issue of the Journal of the American Dietetic Association, researchers analyzed common sources of caffeine in the diet of a representative sample of the U.S. population that was surveyed from 1994 to 1996 and in 1998.

Caffeine is found in beverages such as coffee, tea, and soft drinks, but it is also found in lesser amounts in some foods like chocolate. Other sources of caffeine, such as energy beverages, caffeinated water, herbal supplements, and medications were not included in this study.

Researchers found 87% of adults and 76% of children had caffeine in their daily diets, up from 82% of adults and 43% of children aged 6 to 17 years in 1977.

But while more people are getting a caffeine buzz, the strength of that jolt appears to be declining as the average daily intake of caffeine dropped from 227 mg per day to 193 mg per day in adults.

Among caffeine users, coffee (71%), soft drinks (16%), and tea (12%) were the top three sources of caffeine. Coffee was the main caffeine source for men and women over age 18, but soft drinks were the top caffeine source among children aged 2 to 17.

Among persons aged 2 to 54 years, as age increased, caffeine consumption increased.

An 8 oz cup of brewed coffee has about 135 mg of caffeine, an 8 oz cup of caffeinated tea has about 50 mg of caffeine, a 12 oz glass of Coca-Cola has about 34.5 mg of caffeine, and a 12 oz Diet Coke has 46.5 mg of caffeine.

Healthy Recipe Finder

Browse our collection of healthy, delicious recipes, from WebMD and Eating Well magazine.

Top searches: Chicken, Chocolate, Salad, Desserts, Soup

Healthy Recipe Finder