Daily How Much

Most healthy adults can stay at or under 400 mg caffeine per day, while pregnancy caps are often set under 200 mg and teens do better with far less.

Most adults can handle up to 400 mg of caffeine per day, with lower caps for pregnancy, teens, and people who feel side effects sooner.

Most healthy adults do well at 400 mg a day or less, while pregnancy calls for staying under 200 mg.

A typical 8-oz cup of brewed green tea lands around 20–45 mg of caffeine, with prep choices often shifting the number more than the label.

Most 15-year-olds do best staying at or under 100 mg of caffeine per day, with less if sleep, stress, or heart symptoms show up.

Many pediatric groups cap teens at 100 mg of caffeine per day, and plenty of 13-year-olds feel better staying below that.

Most 10-year-olds should stay under about 85 mg of caffeine per day, and many kids do best with none at all.

Two standard espresso shots usually land near 125 mg of caffeine, with real-world totals swinging with bean type, dose, and shot size.

A standard 8-ounce mug of brewed coffee often lands around 80–100 mg of caffeine, yet beans, grind, and brew style can shift that number a lot.

Most nursing parents do fine with up to about 300 mg of caffeine per day, yet some babies need less based on age and sensitivity.