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Why has my tolerance of caffeine dropped? Why can't I consume coffee or energy drink?

hi my name is Dina im 19 im from Norway, i got a question, i drinked energy drink quite some time ago, like u can say 1-2 weekends i drinked up to 4 liter of it, im an healthy person, normal weight and so. but i really wonder why my tolerance of coffeine dropped super alot, and now i cant drink even coffee nor energy drink without getting coffeine overdose. 1 energy drink = 485ml Name: Burn , coffeine ammount 32mg/100ml
Wed, 31 Jul 2013
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Psychiatrist 's  Response
Thanks for choosing health care magic for posting your query.
I have gone through your question in detail.
Some people do experience what you are experiencing and this is not very common.The common reasons behind this is that if you develop anxiety disorder then you caffeine tolerance will reduce. Secondly if you are on any medications like OCPs or any other drug that interferes with caffeine metabolism then it may occur.
Hope I am able to answer your concerns.
If you have any further query, I would be glad to help you.
In future if you wish to contact me directly, you can use the below mentioned link:

Wish you good health,
Dr. Srikanth Reddy M.D.
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