Giardiasis does not spread via the bloodstream, nor does it spread to other parts of the gastrointestinal tract, but remains confined to the lumen of the small intestine. Giardia trophozoites absorb their nutrients from the lumen of the small intestine, and are anaerobes.iardiasis does not spread via the bloodstream, nor does it spread to other parts of the gastrointestinal tract, but remains confined to the lumen of the small intestine. Giardia trophozoites absorb their nutrients from the lumen of the small intestine, and are anaerobes.
Glycerin suppositories side effects. The most common side effects of glycerin suppositories are anal irritation, a burning sensation, diarrhea, gas, nausea and abdominal cramps.
How to use glycerol suppositories. 1  Before you start using the suppositories, read the manufacturer's printed information leaflet from inside your pack. 2  Use one suppository when needed. It will take about 20 minutes to work.