4 doctors weighed in:
Is there a "limit" of how many mg of caffeine someone can have in a day? Or no limit?
4 doctors weighed in

Dr. Alvin Lin
Internal Medicine - Geriatrics
2 doctors agree
In brief: Yes but limit varies
Yes, there is a limit but that limit varies depending upon your metabolism and sensitivity.
Some can't handle even the small amount of caffeine in a cup of coffee while others can down 5-6 cups/day. You'll know you've exceeded your personal limit if your heart races, your head pounds, you feel nervous & jittery, and you go through withdrawals when you miss your morning cuppa joe.

In brief: Yes but limit varies
Yes, there is a limit but that limit varies depending upon your metabolism and sensitivity.
Some can't handle even the small amount of caffeine in a cup of coffee while others can down 5-6 cups/day. You'll know you've exceeded your personal limit if your heart races, your head pounds, you feel nervous & jittery, and you go through withdrawals when you miss your morning cuppa joe.
Dr. Alvin Lin
Dr. Alvin Lin
Thank
Dr. Alan Wartenberg
Addiction Medicine
In brief: Yes there is a limit
But some people have enormous tolerance to it.
However, it is really not good to take large doses of any stimulant, whether that is cocaine, amphetamine or caffeine, for most people. The higher the dose, the more likelihood of anxiety, insomnia, tremor and even severe reactions like psychosis and seizures. 2-3 servings per day, in the mornings, is the maximum most would recommend.

In brief: Yes there is a limit
But some people have enormous tolerance to it.
However, it is really not good to take large doses of any stimulant, whether that is cocaine, amphetamine or caffeine, for most people. The higher the dose, the more likelihood of anxiety, insomnia, tremor and even severe reactions like psychosis and seizures. 2-3 servings per day, in the mornings, is the maximum most would recommend.
Dr. Alan Wartenberg
Dr. Alan Wartenberg
Thank
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