Daily How Much

Most healthy adults do well staying near 400 mg of caffeine per day, and pregnancy limits are commonly set near 200 mg.

Most healthy adults can handle up to 400 mg of caffeine a day, while pregnancy guidance usually caps daily intake at 200 mg.

Most teens do best staying at or below 100 mg of caffeine a day, with lower targets for smaller bodies and anyone who feels jittery or sleeps poorly.

Caffeine alone seldom triggers a heart attack; the scare comes from massive doses, stimulant mixes, or blocked arteries.

Most teens do best at 100 mg of caffeine a day or less, with an earlier cutoff time to protect sleep.

Most pregnancy guidance caps caffeine at 200 mg a day, and studies link higher daily intakes with a higher chance of pregnancy loss.

Heart palpitations can show up around 100–200 mg in some people, and the risk rises as daily intake pushes past 400 mg.

Most healthy adults can keep caffeine near 400 mg a day, while staying under 200 mg in one sitting to protect sleep and comfort.

There’s no single caffeine number that guarantees a heart attack; risk climbs with high doses taken fast, especially from concentrated products.

Most pregnancy guidance caps caffeine at 200 mg a day; going above that, day after day, is tied to a higher miscarriage risk in studies.