Understanding How Glycerin Suppositories Work
Glycerin suppositories operate through a dual mechanism to facilitate a bowel movement, acting locally in the rectum. One way they work is through an osmotic effect, meaning glycerin draws water from surrounding tissues into the stool and colon. This influx of water helps to soften the stool and increase its volume, making it easier to pass.
Glycerin also mildly irritates the rectal lining, stimulating muscle contractions (peristalsis). This propels stool forward and initiates a bowel movement.
The combined action of softening the stool and stimulating bowel contractions typically leads to a bowel movement quickly after administration. Because glycerin is minimally absorbed into the bloodstream from the rectum, its effects are largely confined to the lower bowel. This localized action contributes to its gentle profile for relieving constipation.
How and When to Use Glycerin Suppositories
Glycerin suppositories are commonly used to relieve occasional constipation, providing a quick solution when a prompt bowel movement is desired. Unwrap the suppository completely before use.
For proper insertion, lie on your side or stand with one leg raised. Gently insert the pointed end of the suppository into the rectum, pushing it in about one inch for adults. After insertion, it is advisable to remain lying down for a few minutes to help the suppository stay in place and begin dissolving.
A bowel movement typically occurs within 15 to 60 minutes after administration. While primarily for general constipation, these suppositories can also be used in specific situations, such as preparing the bowel for certain medical procedures. Glycerin suppositories are available in formulations suitable for adults, children, and infants, though consulting a healthcare professional is recommended for very young children. They are intended for short-term use only.
Safety and Potential Side Effects
Glycerin suppositories are safe for occasional use, though mild, temporary side effects can occur. These include rectal irritation or discomfort and mild abdominal cramping.
Use only as directed and not for prolonged periods, as consistent use can lead to laxative dependence. Avoid use if experiencing severe abdominal pain, nausea, vomiting, or rectal bleeding, as these symptoms require immediate medical attention.
Consulting a doctor is advisable if constipation persists despite using suppositories, or if any severe or unusual side effects occur. For specific populations, such as infants, or individuals with pre-existing medical conditions, seeking medical advice before use is a prudent step. Serious side effects are rare when glycerin suppositories are used according to the instructions.