Caffeine is a natural chemical that can be found in a wide variety of products. It is most often consumed in the form of soft drinks, coffee, tea, and chocolate. But there are also several other ways to get caffeine, including over-the-counter medications, non-prescription drugs, and supplements.
The Food and Drug Administration lists 400 milligrams of caffeine daily as the maximum safe limit for adults. This amount is equivalent to four or five cups of coffee. However, drinking more than this may cause negative side effects.
Caffeine has been linked to increased blood pressure and heart rate. It also can increase the frequency of urination. And excessive amounts of caffeine can make it harder to sleep.
Caffeine can be found naturally in certain plants. It is most commonly found in teas and chocolate, but it is also used in energy drinks.
While caffeine can be a useful boost to the mind and body, some people are prone to becoming physically dependent on it. This can happen due to the chemical changes in the brain that caffeine causes. If you think you might be addicted, talk to your doctor. He or she can help you manage your addiction.
In addition to increasing your blood pressure and heart rate, caffeine can interfere with your ability to sleep. Those who have a history of sleeping problems should avoid drinking it before bed.
Excessive caffeine consumption can also increase the risk of miscarriage and birth defects. Pregnant women should not consume more than 300 milligrams of caffeine per day.