Tag: Effects of Caffeine

Stimulant Effects of Caffeine Caffeine is a mild stimulant which acts on the central nervous system and some other organs of the body, for example the kidneys. It is readily absorbed into the bloodstream and does not accumulate in the body, being rapidly metabolised and excreted. The stimulant effects of a small amount (say one cup of coffee) take effect after 15 – 45 minutes and last normally for about four hours. However, caffeine is absorbed from soft drinks at a slightly slower rate than that from coffee and tea, thought to be because of their acid pH. The effects ... Read more