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NU · P1 · Nutrition / PharmaStrong evidence
Caffeine Pulse
Adenosine receptor antagonism.
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Anxiety sensitivity · Late-day use (sleep)
About this evidence tier
This is a provisional editorial rating for the general practice, not proof that it treats a condition. Research citations will be attached after source-level review. Use the safety notes and judge the practice by your own tracked response.
Caffeine blocks adenosine and lifts alertness. Used early and in measured amounts, it is a precise tool. Late use steals sleep, so timing matters more than dose.