Hi All. Joining the discussion late, but can understand the constipation issue - dread every treatment session as it is one of my worst side effects. Loads of water, Movicol and lots of prunes helped a little. But found a natural item: Ortisan Fruits & Fibre - from health food shops. It is made from figs, senna, tamarind etc and is like a stock cube and you chew 1/2 of one in the evening. I found it a great relief, if you will pardon the pun. I checked with my Doc and he is OK with me using it. But do check also before trying it. Hope you are all well otherwise.