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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).

Dr Ali agreed

Answered 7/27/2012

5.9k views

Thank

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