Quick answerFor healthy adults, the U.S. FDA cites about 400 mg of caffeine per day, roughly four 8-oz cups of brewed coffee, as an amount not generally associated with dangerous effects. Sensitivity varies. Pregnant or breastfeeding people, people with heart conditions or those on certain medications should ask their doctor.
Caffeine at a glance (approximate)
- 8 oz brewed coffee: 80-100 mg
- 1 espresso shot: about 60-75 mg
- 8 oz decaf: 2-15 mg
Signs you've had too much
Jitters, rapid heartbeat, anxiety, upset stomach, trouble sleeping. Cut back if you notice these.
Frequently asked questions
How long does caffeine last?
Its half-life is about 3-6 hours for most adults.
Can kids drink coffee?
Pediatric groups advise against caffeine for children.
How much caffeine is in Yemeni coffee?
Similar to other Arabica. See our guide.
Make every cup count: Al-Aqeeq coffee.
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