Articles
Caffeine: How much is too much?
Content
How much is too much?
You drink more than 4 cups of coffee a day
Even a little makes you jittery
You're not getting enough sleep
You're taking medications or supplements
Curbing your caffeine habit
The bottom line
Even a little makes you jittery
Some people are more sensitive to caffeine than are others. If you're susceptible to the effects of caffeine, even small amounts may prompt unwanted effects, such as restlessness and sleep problems.
How you react to caffeine may be determined in part by how much caffeine you're used to drinking. People who don't regularly drink caffeine tend to be more sensitive to its effects.
