You may be so enthused at the idea of relieving symptoms and preventing potential illness by using a colon cleanse system that you have not even considered the possible side effects that you could have. Although many of these products are natural or herbal and some don't even require you to ingest anything, there are potential side effects that you should consider before you decide if a colon cleanse is for you. You can research the different products and procedures on the internet to find out what to expect from some of the most common ingredients and procedures.