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Up to 400 milligrams (mg) of caffeine a day appears to be safe for most healthy adults. That's roughly the amount of caffeine in four cups of brewed coffee, 10 cans of cola or two "energy shot" drinks. Keep in mind that the actual caffeine content in beverages varies widely, especially among energy drinks.
Generally, “energy drinks” have 54 to 328 milligrams of caffeine per 16 fluid ounces, with a few brands containing 41 to 246 milligrams of caffeine per 12 fluid ounces.
Healthy adults shouldn’t consume more than 400 milligrams (mg) of caffeine per day. That’s equal to about four 8-ounce cups of brewed coffee or 10 cans of cola. Teens should limit their caffeine intake to less than 100 mg per day (one 8-ounce cup of coffee or about two cans of cola). Of course, caffeine isn’t all terrible.
Caffeine safe limits for adults, children, and those with medical conditions. Includes a safe dose calculator and guidelines for consuming caffeine safely.
In the U.S., adults consume an average of 135 mg of caffeine daily, or the amount in 1.5 cups of coffee (1 cup = 8 ounces). [5] The U.S. Food and Drug Administration considers 400 milligrams (about 4 cups brewed coffee) a safe amount of caffeine for healthy adults to consume daily.
The Daily Caffeine Limit Calculator is a user-friendly tool to help you determine your safe daily caffeine intake. This refers to the maximum quantity of caffeine you can consume without encountering caffeine overdose symptoms.
According to the U.S. Food and Drug Administration, adults should not consume more than 400 milligrams (mg) of caffeine a day. This comes out to about four or five cups of coffee. The FDA doesn't have official guidelines for caffeine intake in children and adolescents.
For most healthy adults, a maximum of about four 8-ounce cups of coffee —up to 400 milligrams of caffeine—each day should not cause any serious health effects. However, it’s...
Up to 400 milligrams of caffeine a day is considered safe for most adults. However, people's sensitivity to caffeine varies. If you're bothered by headaches, restlessness or anxiety, you may want to reevaluate your caffeine intake.
Four out of every five adults consume caffeine daily. Your caffeine intake depends on the caffeine-containing products you prefer. A cup of tea only has 14 to 60 milligrams of caffeine...