How Suppositories Work       Â
Rectal suppositories are a way of delivering compounds into the body through  the rectum. They consist of different nutritional compounds, such as amino acids, and a plant based fatty acid base. They are inserted into the rectum, where they dissolve and the ingredients are absorbed  directly into the body. The vascular colon allows the ingredients to be  absorbed directly into the bloodstream. The best part about  suppositories is that absorption takes place within 20 minutes.