This information is just stunning. If you are looking for an article on caffeine allergy, look no further. You found a wealth of information here. This article sites studies on caffeine allergies that go back as far as the early 1900's. The information here is sound and the information is complete.

Very informative, but I see no reference to histamine reaction which is the hallmark of allergy. Still, this is an EXCELLENT article on caffeine's potential for extreme damage to the body. Sensitivity or allergy, partakers of caffeine take heed!