November 19, 2009
What are the drug interactions between caffeine pills and sleeping pills?
The active ingredient in sleeping pills is diphenhydramine.
I have a friend who takes about 2-3 caffeine pills a day and drinks about 2-3 energy drinks (red bull mostly). She makes sure to take the caffeine pills at least four hours before the sleeping pills.
So in all, it's about 600-1000 mg of caffeine followed by 50-100mg diphenhydramine.
If she does this daily, will this eventually have an adverse affect on her health (not long term, more short term)?
I'm not really looking for "this is bad, tell her not to do it" advice, but actual pharmaceutical/medical knowledge on exactly what will happen.
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