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Can Coffee Give You an Allergic Reaction?

author image Nina K.
Nina K. is a Los Angeles-based journalist who has been published by USAToday.com, Fitday.com, Healthy Living Magazine, Organic Authority and numerous other print and web publications. She has a philosophy degree from the University of Colorado and a journalism certificate from UCLA.
Can Coffee Give You an Allergic Reaction?
A cup of coffee on a table beside a man's hand. Photo Credit Siri Stafford/Photodisc/Getty Images

Like any food or beverage, coffee can trigger an allergic reaction in those who are sensitive to it. That said, the caffeine in coffee can also create a number of side effects that are unrelated to allergies, including upset stomach, jitteriness and irregular heartbeat. If you experience any unusual symptoms after drinking coffee, see your doctor for a diagnosis.

Coffee and Allergies

If you are allergic to coffee, you're likely reacting to the caffeine. However, there's a small chance that you may be sensitive to other substances. In 2012, Baylor University Medical Center reported what it referred to as the first known adult case of angiodema -- allergy-induced swelling -- from instant coffee that was not related to caffeine. Other signs of an allergic reaction include nausea, vomiting, abdominal pain and diarrhea.

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