Does this really work for severe constipation? My husband is a cancer survivor of Neuroendocrine Tumors and he’s 2 years out from his Whipple surgery and now his intestines are all a mess will go sometimes 9 or 10 days with no BM and he was in the ER not too long ago because they thought he had a blockage somewhere because he’s been told that his cancer can come back with a vengeance! So they put him on a terrible regimen and it does not work! Miralax, Linzess, 3 stool softeners a day and nothing 😩 so we don’t know what else he can try? Any advice or help would be greatly appreciated! Thank you 😊