If you perform the Coffee-Enema in the morning after your first bm it shouldn't be a problem. It actually makes me calmer. Some people say they get jittery but I think they are using too much coffee and too much in the enema at one time. I would check out the info on enemas and you can get the recipe and how to perform them //www.curezone.org/cleanse/enema/
Performing a coffee enema is not the same as drinking coffee and it actually is for cleansing the liver, not the bowel but I did get a lot of candida out from them and some stones as well. It is almost like doing a Liver Flush but gentler on the system.
I was dx'd with adrenal fatigue 4 yrs ago. It got better then got worse with new stress but not as bad as the first time. I have been using Sea Salt . Don't get the refined salt from the grocery store. Use either Redmond's Real salt or Himalayan Pink salt which you can find at the health food store. If you are concerned about being dehydrated this book will help "Your Body's Many Cries for Water" by Dr. Batmanghelidj. He also has a website http://www.watercure.com/
Sip a little water throughout the day to rehydrate.