If you do not have a large bowel but still have your small intestine, then yes you should still be able to absorb a lethal dose of SN. There is no need to increase the dose to 100g or 4 cups because that could increase the risk of vomiting, gastric rupture, or suffering due to the body's natural rejection reflexes. The large bowel is mainly responsible for water absorption and processing waste, so its removal typically does not impact SN absorption as long as the small intestine is intact.