i have very sluggish movement through the entire pipework from my stomach to bum, (had a 4 inch poilp removed from colon last year which helped but still have something there which means as i poop the lining of my bum/pipework moves down with the poop and blocks the exit hole!) movicol helps, but you have to drink masses of water as it needs this to soften excriment enough to aid it to slip down and out easily! lactulose is good too. i tend to aleternate a few days of movi then a few of lactulose so my body doesn't get used to one or the other. but the best thing i have found is... when i get really bunged up i have a big portion of chips (chunky/thick fries) the thin ones don't work, they have to be the 'proper English chips'... these are extremely reliable at pushing everything through in a few hours! ... it is the bulk that does it!