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A member asked:
I don't drink caffeine after 3. why can't i sleep at 10?
A doctor has provided 1 answer
Half life: As we age, we metabolize caffeine differently. It may take 13 hours to get out of your system. I tell patients to take last caffeine 12 hours before planned bedtime. Also caffeine can aggravate other medical issues which may be causing sleep problems (rls, nocturia, cardiac issues, etc).
Answered 7/27/2012
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