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“Depending on the type of coffee and the brew, a typical eight-ounce cup of coffee ranges from about 80 to 100 milligrams of caffeine per cup,” says Pelitera.
According to the USDA National Nutrient Database, a 240-millilitre (8 US fl oz) cup of "coffee brewed from grounds" contains 95 mg caffeine, whereas an espresso (25 mL) contains 53 mg. [189] According to an article in the Journal of the American Dietetic Association, coffee has the following caffeine content, depending on how it is prepared: [186]
CNN: How much coffee is too much? Wen: The concern with too much coffee is about consuming too much caffeine, which can cause heart palpitations, anxiety, restlessness and difficulty sleeping.
(For the record, the Food and Drug Administration recommends having no more than 400 mg of caffeine per day, and an 8-ounce cup of coffee contains about 96 mg of caffeine.). And black coffee is ...
A cup of coffee contains 80–175 mg of caffeine, depending on what "bean" (seed) is used, how it is roasted, and how it is prepared (e.g., drip, percolation, or espresso). [33] Thus it requires roughly 50–100 ordinary cups of coffee to reach the toxic dose.
One study comparing various home-prepared samples came to the result that regular instant coffee (not decaffeinated) has a median caffeine content of 66 mg per cup (range 29–117 mg per cup), with a median cup size of 225 ml (range 170–285 ml) and a caffeine concentration of 328 μg/mL (range 102–559 μg/mL). [24]
8-ounce cup of drip coffee. 95–200 milligrams (robusta coffee beans contain about twice as much caffeine as arabica). 1-ounce espresso shot. 60–65 milligrams. 12-ounce can of Coke. 34 milligrams
In general, one serving of coffee ranges from 80 to 100 milligrams, for a single shot (30 milliliters) of arabica-variety espresso, to approximately 100–125 milligrams for a cup (120 milliliters) of drip coffee. [10] [11] Arabica coffee typically contains half the caffeine of the robusta variety. [9] In general, dark-roast coffee has very ...
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