This product is used to relieve occasional constipation. Glycerin belongs to a class of drugs known as hyperosmotic laxatives. It works by drawing water into the intestines. This effect usually results in a bowel movement within 15 to 60 minutes.

How long do suppositories take to work for constipation?

The suppositories take 10 to 45 minutes to work, so it's best to stay close to a toilet after you've used them. The most common side effects are feeling sick (nausea), diarrhoea, stomach pain or cramps.

Which suppository is best for constipation?

Doctor-recommended glycerin works by attracting water into the stool to promote a bowel movement. The Fleet® Liquid Glycerin Suppository is inserted rectally, allowing it to act locally in the colon without having to go through the entire digestive system.