These reactions are different than those associated with consuming to
o much caffeine which include jitters, headache, <span style = 'background-color: #dae8f4'>insomnia</span>
, and irritability. An uncommon component to
caffeine that people experience adverse reactions to
is tannins, but it does happen. Tannins are not only found in coffee and soda, but in chocolate and red wine as well. Adverse reactions to
herbicides and pesticides used to
grow coffee beans is a much more common culprit of adverse reactions.