Pregnant women are advised to consume no more than 200–300 mg of caffeine per day, depending on the health agency. Studies suggest that healthy adults can safely consume up to 400 mg of caffeine per day, which is equivalent to approximately 4 cups (945 mL) of coffee or 5 regular cans (42 ounces or 1.2 liters) of Red Bull ( 9). That said, the amount of caffeine in coffee is affected by several factors, including the type of coffee bean, roasting style, and serving size. Meanwhile, coffee packs around 96 mg per cup (240 mL) ( 4). Regular and sugar-free Red Bull contain 75–80 mg of caffeine per 8.4-ounce (248-mL) can ( 1, 2). Red Bull packs a significant amount of B vitamins, whereas coffee has antioxidants and is almost calorie-free.Ĭaffeine acts on the nervous system to increase energy, alertness, and brain function.Ĭoffee and Red Bull offer similar amounts of this stimulant per serving, though coffee has a little more. Remember that milk, cream, sugar, and other add-ins affect the nutritional value and calorie count of your cup of joe. This vitamin is necessary for energy production and normal cell function ( 4, 5).Ĭoffee also boasts polyphenol antioxidants, which combat oxidative stress in your body and may reduce your risk of several diseases ( 6, 7, 8). One cup (240 mL) of brewed black coffee contains 2 calories and trace amounts of minerals, including 14% of the DV for riboflavin. CoffeeĬoffee is produced from roasted coffee beans. Sugar-free Red Bull is sweetened with the artificial sweeteners aspartame and acesulfame K.īoth the regular and sugar-free varieties contain taurine, an amino acid that may boost exercise performance ( 3). Sugar-free Red Bull differs in calorie and sugar content, as well as its levels of certain vitamins and minerals. One standard, 8.4-ounce (248-mL) can of regular Red Bull provides ( 1): This energy drink comes in numerous flavors, including original and sugar-free, as well as several sizes. The nutrition contents of Red Bull and coffee vary significantly.
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