The common ingredients include tea (often green, black and oolong tea or a mix), fruit juices, supplement powders, multivitamin mixes, sweeteners, plant extracts and food colorings.

Because the caffeine content in green tea exists on a spectrum, the U.S. FDA estimates an 8-ounce cup of green tea can contain anywhere from 30 to 50 mg of caffeine.

While black tea has less caffeine than coffee, it’s still a caffeinated beverage. Black tea has about 47 milligrams of caffeine while a cup of joe comes in at just under 100 milligrams of caffeine.

While black tea has less caffeine than coffee, it’s still a caffeinated beverage. Black tea has about 47 milligrams of caffeine while a cup of joe comes in at just under 100 milligrams of caffeine.

Because the caffeine content in green tea exists on a spectrum, the U.S. FDA estimates an 8-ounce cup of green tea can contain anywhere from 30 to 50 mg of caffeine.

One cup (240 mL) of green tea is estimated to contain about 30 mg of caffeine. A serving of matcha made with 2 to 4 g (1/2 to 1 teaspoon) of powder could have a caffeine content between 38 and 176 mg.

Caffeine content isn’t the only way that these beverages impact wellness. Energy drinks have healthy ingredients like B vitamins and the amino acid taurine. If you’re looking for a bit … ...

Hot water draws more caffeine out of tea leaves in a shorter period of time, and the same holds for coffee. Coffee is typically brewed at a temperature of about 195 to 205°F (90 to 96°C).

Brewed black tea | Caffeine content: 47 mg – Standard serving size of drink: 8 oz (237 mL) – The amount of caffeine in brewed black tea is almost double that of green tea, and there are ...

Brewed black tea | Caffeine content: 47 mg – Standard serving size of drink: 8 oz (237 mL) – The amount of caffeine in brewed black tea is almost double that of green tea, and there are ...