Informational only. FDA's 400 mg/day figure applies to healthy adults, not to pregnancy, children, teens, or people with heart conditions or caffeine-interacting medications.
Caffeine per serving

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Rockstar Energy · energy-drink

The Original

mg per serving (as stated)
160 mg
Share of FDA's 400 mg healthy-adult figure
40% of 400 mg
Serving as stated on page
Serving Size 16 fl oz (473 mL)

Product note: Label wording is "At least 160 mg".

Percentages compare one stated product amount with the FDA's 400 mg/day figure for healthy adults. They are arithmetic comparisons, not consumption targets, and do not apply to people who are pregnant or breastfeeding, children, teens, or people with heart conditions or caffeine-interacting medications. Serving wording and product notes qualify the stated amounts; a missing serving size is not inferred.

Manufacturer evidence

At least 160 mg of caffeine provides feelings of increased alertnes

Rockstar Energy product page · Retrieved

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