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A 25-year-old female asked:

Can too much caffeine make you nauseous? (specifically, more than 1 cup of coffee & tea in a day.)

3 doctor answers3 doctors weighed in
Dr. Pavel Conovalciuc
Family Medicine 24 years experience
Usually not: However, some sensitive stomachs may feel that. Also, if your stomach lining is inflamed (gastritis or ulcer), caffeinated beverages may irritate it even worse and cause nausea.
Created for people with ongoing healthcare needs but benefits everyone.
Dr. Dariush Saghafi
Neurology 34 years experience
Absolutely can: Caffeine is a constrictor of blood vessels, a stimulant of the brain, and diuretic (causes body to lose water). Particularly for the reason that it acts in the central nervous system as a stimulant (that's how it becomes a pick me upper) is why it likely causes nausea. Now, you only do 1 daily before affected. I can drink starbucks literally every few hours and i never get nauseous.
Created for people with ongoing healthcare needs but benefits everyone.
Dr. Michael H. T. Sia
Pediatrics 32 years experience
Possible: Coffee/tea can cause nausea as a stomach irritant-causing stomach upset. Some people are more sensitive to this effect than others, and food consumption before drinking coffee can have an effect on stomach-related symptoms. Both may contain caffeine that can raise blood pressure ; cause feelings of dizziness, heart palpitations ; stomach irritation.
Created for people with ongoing healthcare needs but benefits everyone.
Last updated Oct 23, 2016

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