Hi Margaret,
I have been doing coffee enema's (using organic coffee) for years now and I never felt any effects from the caffeine. According to the article below:
http://www.mygutsy.com/the-ultimate-liver-detox-coffee-enemas/
The intestine has two circulatory systems attached to it. One system supplies the intestines with blood for maintenance of the intestinal tissues.
The other system is called the portal system. It is a critical body system that draws all of the absorbed nutrients from the intestines and sends them directly to the liver. In other words, when you eat food, it does not go into the bloodstream, as everyone thinks. Only a tiny part of it does, which is the nutrients that are absorbed in the mouth, esophagus and stomach. All the rest of the nutrients go into the portal system and go to the liver, not the general bloodstream.
Here, the nutrients are further processed by the liver before entering the main blood stream. So when coffee is introduced into the colon, it is absorbed directly into the liver through the colon wall.
Coffee has a special affinity for the liver, and moving it there from the colon is very different than sending it to the liver by drinking it. When coffee is ingested by mouth, it is digested by the stomach acids, mainly, and most of its herbal medicine properties are destroyed.
Coffee taken by mouth is okay as a stimulant, laxative, and perhaps a smooth muscle relaxant. One cup of regular coffee daily is okay for most people, but not highly recommended, and more is harmful.- Dr Wilson - See more at:
http://www.mygutsy.com/the-ultimate-liver-detox-coffee-enemas/#sthash.GpOAC9pv.dpuf
Hope this helps!
Denise