I doubt if a Colon Cleanse by itself can help you your problem of fatigue and Candida. They are most probably related and to cleanse the system of Candida you need something that would treat the entire digestive system.
I promote and sell probiotic, botanical oils and mushroom powders but would recommend a very good probiotic. These friendly bacteria would help keep the yeast in check and hopefully treat the Candida problem.
Just completed a small trial with the National Candida society of UK and preliminary reports and results are very positive. Many of the users had reaction within hours to 1-2 days of using the probiotic and many felt better a few days later. Many who bought from me at two health expos are re-ordering and helping them in their Candida. They also reported increased energy levels.
Check out the website at:
www.osumex.com
Click on probiotics and read the testimonials. You can also navigate using the "Product/Solution" on the top left and most underscored words are links to more info.