How long do caffeine pills take to kick in? Unpacking the timeline and factors influencing effect
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5 min read
Caffeine, a well-known central nervous system stimulant, is rapidly absorbed from the gastrointestinal tract, reaching about 99% absorption within 45 minutes after ingestion. This rapid absorption timeline, however, doesn't tell the whole story of how long do caffeine pills take to kick in and reach their maximum effect.
