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Most of us tend to rely on some kind of caffeinated drink to get through the mornings. Whether your vice is coffee, tea, or energy drinks, we’re all partial to the energy-boosting effects of caffeine. But those with an intolerance to caffeine are less enthusiastic. It ruins their day and causes havoc throughout their digestive system. What’s worse is that the symptoms of caffeine intolerance are similar to so many other conditions, that it often goes unidentified. So the issue is never addressed. 

Caffeine Intolerance Symptoms

You may be surprised at how common caffeine intolerance is. A major issue with caffeine intolerance is that the symptoms are often wrongly mistaken for withdrawal. A great excuse boil the kettle again for your third cup. Here are a few of the most common symptoms;


If you feel anxious or jittery after your mid-morning coffee, it might not be caused by stress at work, but by caffeine intolerance. Whether short-lived or constant, getting the jitters after coffee or tea isn’t a good sign. 

Headaches and Migraines

Headaches following your coffee break or afternoon tea are a clear indicator that something’s wrong. Even if they’re only mild, headaches can be a clear sign of a food intolerance. Since caffeine affects your brain activity, a signal from the head complaining about the substance should be listened to. 


Now, finish off an energy drink at 8 pm and then find yourself struggling to sleep, that’s to be expected. But if you stopped drinking caffeine at 2 pm and still can’t get to sleep at a reasonable hour, you may be intolerant to the substance. Keep an eye out, though, as many desserts can have hidden caffeine, especially anything with chocolate!

Intolerance or Over-consumption?

Remember, no-one is completely immune to caffeine effects. So, anyone who regularly consumes over 400mg in a single day is likely to experience some negative consequences. Just because you aren’t intolerant to caffeine, doesn’t mean you should go crazy and have several shots of espresso. Listen to your body, and if you recognize any of the above symptoms, it’s a good idea to get tested.