Caffeine absorption

[NMajik]

How does temperature affect absorption of caffeine taken orally?

I'm not sure if it's really a matter of "absorption" but I couldn't think of a better term.

 

(Sorry if I put this in the wrong subforum)

[CaptainPanic]

Temperature of what?

 

The outside air (the weather)?

The coffee?

Your body (which should be 37 deg C always)?

 

Caffeine goes from a water solution through the walls of the intestines into the blood. It is safe to assume that this happens at 37 deg C. The coffee cools down to 37 deg C quite fast after you drink it. This mass transfer (diffusion) would likely proceed a little faster at higher temperatures, but that's rather irrelevant in a warm-blooded body.

 

The weather undoubtedly has an influence as well... If you sweat and dry out a little, take up of chemicals from watery solutions will change. But I don't want to make any guesses, because it's really not my field of expertise.

[insane_alien]

it mainly depends on the difference in concentration of caffeine in your blood and your gut. temperature would play only a minor role with higher temperatures leading to higher fluxes. in the body this is negligble because unless you are recently dead the temperature won't change much.