Cafeína por Bebida

Caffeine content by beverage

To get your total caffeine, take the amount per serving and multiply by how many servings you had. Some reference values to work from: espresso ~63 mg per 30 mL shot, drip coffee ~95 mg per 240 mL, decaf 2–15 mg per 240 mL (not zero), black tea ~47 mg, green tea ~25 mg, cola sodas 32–40 mg per 350 mL, Red Bull ~80 mg per 250 mL, Monster ~160 mg per 500 mL. Example: 2 espressos + 1 Red Bull = 2·63 + 80 = 206 mg. For healthy adults the FDA puts the safe ceiling at 400 mg/day, and anyone pregnant should keep it below 200 mg/day. If you take caffeine before training, the usual range is 200–300 mg about 30–45 minutes ahead of the session.

Applications

People reach for this to track daily caffeine intake against the 400 mg ceiling, to plan pre-workout dosing (3–6 mg/kg), and to watch consumption during pregnancy (keep under 200 mg/day). It also helps cardiac and anxiety patients stay inside the limits their doctor set, and lets anyone dial back intake when caffeine is wrecking their sleep.

FAQ

Does decaf really contain caffeine? It does, usually 2–15 mg in a 240 mL cup. Drink three of them and you're roughly at one regular tea.

Why does the same coffee vary so much? A lot of things move the extraction by 20–40%: the bean species (robusta packs about twice the caffeine of arabica), how dark the roast is, how fine the grind is, the water temperature and how long it brews.

Do energy drinks have more caffeine than coffee? By volume, usually not. Red Bull runs about 32 mg per 100 mL while drip coffee sits near 40 mg per 100 mL. The bigger cans are another story: a 500 mL Monster still adds up to more caffeine overall.