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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Cellucor · pre-workout

C4 Ultimate Pre-Workout

mg per serving (as stated)
300 mg
Share of FDA's 400 mg healthy-adult figure
75% of 400 mg
Serving as stated on page
Serving size not stated on product page

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

The Tri-Stim formula features 300mg of caffeine, TeaCrine®, and Dynamine™ for intense,

Cellucor product page · Retrieved

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