I use a great digestive herbal enzyme product called Experience that cleans out the colon of any old stuff (which I find causes a lot of the gas). It serves as both a digestive aid and as a way to keep the colon clean and healthy. The herbal combination of this product helps to reeducate the colon to function properly, helping either with C or D. If interested, please email me directly as I am a distributor of this product and don't want to offend anyone by commercial activity. All I know is it works for me and my husband and MANY others I know, and am offering it as a possible solution to colon problems and gas.Have a healthy day!!Josee