Salvage radiation therapy 12 years after RALP

[u/mikestap11]

I had my RALP in 2013 and a solid ten years thereafter with undetectable PSA. Two years ago, the PSA became detectable and slowly growing until this last one, which had increased from its perevious 0.15 to 0.26. We decided to start 35-40 week course of RT to kill this bugger. I will first have a PSMA PET-CT in a few weeks and proceed with the course of treatment.

I have what may appear to trivial concern. The doctor explained I need to arrive at each treatment (arguably scheduled in advance for a consistent time) with an empty rectum. My bowel movements do not take place at the same time every day. The intervals between BMs may range from 8 hours to 35 hours. How can I get more regular?

I rarely eat breakfast. If I do have breakfast, I do not eat lunch. I'm assuming I need to get a more gegualr diet. I have stopped drinking alcohol. Thre days in, but I think I will be successful wit this. I have started mixing a heaping tablespoon of Metamucil with about twelve ounces of water and downing that each morning.

Is there anything else others could suggest? Thanks.

Edit: Format for readability.

[u/rockledge_360]

Mornings. My treatments were at noon. Drank the prune juice in a smoothie at or before 9:00 am. Then the water. It was very helpful, enabling me to arrive as required.