Tammy,
Hello. I, myself, just found out my father has lung cancer and I was reading all the messages we have here on this site. My father is starting to complain of constipation problems and I just called his doctor and they told me that their bowel protocal is to try 2 Senokot S tablets with a full glass of water before bed and if no bowel movement happens then to take 2 more in the morning after breakfast with another full glass of water. They stated drinking the water was a must. I don't know if you have already tried "Senokot S" but I thought I would pass on this info to you. Hope it may help!
Tammy L.