Fleet Liquid Glycerin Suppositories work in as little as 15 minutes. They are easy-to-use, have a mess-free applicator with a lubricated gentle glide tip and are a comfortable, gentle alternative for those who prefer not to use an enema and also want stimulant-free relief. The liquid glycerin suppository is inserted rectally, allowing it to act locally in the colon without having to go through the entire digestive system. Fleet Liquid Glycerin Suppositories work with the water in your system to produce a bowel movement in 15 minutes to 1 hour. Made by the #1 suppository brand , Fleet Liquid Glycerin Suppositories provide fast, predictable relief in minutes. IRI data 52 wks ending 12.29.19