WebMD advises individuals to take mineral oil orally as a laxative in accordance with a doctor's directions. For the sake of accuracy, it is best to use a special measuring device or spoon rather than a household spoon to measure the dose.
According to WebMD, mineral oil is a lubricant laxative that keeps water in the stool and intestines, expediting the passing of the stool through the intestines. Mineral oil is not recommended for use as a laxative in children below the age of 6, people who are bedridden and older adults. When used as a laxative, it is best to take mineral oil on an empty stomach as it may interfere with the absorption of fat-soluble vitamins, such as vitamin A, D, E and K. Bowel movements can take six to eight hours to occur after the medication is ingested.