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.
Quick Answer. Generally speaking, glycerin suppositories take between 15 and 60 minutes to work, according to Drugs.com. While waiting for the suppository to work, it is recommended that individuals limit movement or lie down completely until they feel the urge to have a bowel movement. Continue Reading.