2 doctors weighed in:

What are the symptoms of a caffeine allergy?

2 doctors weighed in
Dr. Paul Williams
Internal Medicine - Allergy & Immunology
1 doctor agrees

In brief: Not "allergy"

Caffeine acts more like a chemical and not l ike an allergen, it does not cause immune reactions, but as a chemical has numerous effects on the cardiac and nervous systems such as jitteriness, nervousness, increased intestinal motility, and so on.

In brief: Not "allergy"

Caffeine acts more like a chemical and not l ike an allergen, it does not cause immune reactions, but as a chemical has numerous effects on the cardiac and nervous systems such as jitteriness, nervousness, increased intestinal motility, and so on.
Dr. Paul Williams
Dr. Paul Williams
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