Olive Oil Olive Oil as a colonic additive can be very helpful for people who are extremely constipated and may have an impacted colon. Olive oil with Aloe will soothe the intestinal lining during inflammation as well as clean out the colon. Flaxseed Oil can be used in place of the Olive Oil but will be less soothing and more directed towards eliminating candida infestations. (If you choose to substitute the Flaxseed Oil you must bring it with you)