Dumping syndrome occurs when food moves to the small bowel faster than usual. Patients can report a variety of symptoms such as abdominal cramps, weakness, flushing, shakiness, and decreased consciousness. Dumping syndrome can be divided into early and late based on the onset of the symptoms after the ingestion of a meal. In the literature, cases of dumping syndrome have been reported, but rarely after jejunostomy tube insertion. We report a case of an 86-year-old female suffering from late dumping syndrome after jejunostomy tube placement. An 86-year-old Saudi female presented with decreased oral intake and gastrostomy tube placement was decided. Later, the multidisciplinary team agreed to switch her to jejunostomy tube after she developed a couple of complications in the site of insertion. However, she developed hypoglycemia due to late dumping syndrome, which was managed with the addition of starch and switching her back to a gastrostomy tube feeding.