To be on the safe side, check with your doctor about how caffeine may affect your heart condition. A heart condition such as atrial fibrillation or tachycardia: If you have a heart issue, you may want to limit or cut out caffeine since it may exacerbate your condition, says Isabel Valdez, PA-C, physician assistant at Baylor Medicine and assistant professor of medicine at Baylor College of Medicine.
There are also some conditions that may make it more dangerous to consume caffeine, such as: Even small amounts of these supplements can be the equivalent of over 20 cups of coffee. Note: You should exercise extreme caution when using caffeine supplements or powders that contain pure or very concentrated caffeine, as the FDA reports there have been at least two caffeine-related deaths in the US linked to these products in the last few years. Most of the time these side effects will subside once the caffeine is out of your system, which can take up to 10 hours.
In the case of excessive consumption, Soffer says you may experience a variety of physical symptoms such as:
This is what causes caffeine to give you energy, but it can also result in unpleasant side effects if you've gone a bit overboard with your caffeine intake. So what's "too much" caffeine to cause symptoms can vary from person to person.Ĭaffeine is a stimulant that excites the nervous system, says Gary Soffer, MD, an integrative medicine physician at Yale Medicine. While the recommended limit is 400 mg/day of caffeine, everyone is different when it comes to their tolerance of it.
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