Feeling groggy when you wake up? You might think grabbing a cup of coffee right away is the best way to jump-start your day.

We looked at the maximum amount of caffeine you should have each day, according to the Mayo Clinic and found out which drinks have the most caffeine and how many of each you should have in a ...

And you thought Red Bull was bad. It turns out that while a can of the energy drink has 80 milligrams of caffeine, a small cup of Starbucks drip coffee has more than three times that amount.

Reaching for some caffeine ... day before 10am does tend to receive a raised eyebrow. But is too much coffee actually bad for us? “There is not a specific ingredient in coffee that is bad for us ...

However, too much caffeine can lead to negative and sometimes dangerous outcomes, which is why the FDA recommends capping caffeine intake at 400 milligrams per day. Caffeine can be present in a ...

It’s generally recommended to limit coffee intake to about 4 to 5 (8-ounce) cups per day, which adds up to about 400 ...

Expecting women really do need to cut down their intake of caffeine - whether from coffee ... or five 12-ounce cans of caffeinated soda a day was enough to double the risk of miscarriage.

These tiny bottles, or "shots," contain nearly the same amount of caffeine as a cup of Starbucks, which is closer to four cups of regular coffee. Each 2-ounce shot has about 215 mg of caffeine.