Fleet Glycerin Suppositories are formulated with aloe and are a convenient alternative for those who prefer not to use a liquid enema. The suppository is easily inserted rectally, allowing it to act locally in the colon without having to go through the entire digestive system and is a good option for stimulant-free relief. Fleet Glycerin Suppositories work by attracting water into the stool, making it easier and more comfortable to promote a bowel movement.