enema was given to me recently for it. years ago was picolax. prefered the enema. was allowed to sip clear fluids.. biggest issue was travelling to get there for early am if your given enema to take, bring a change of clothing with you. ensure when laying down (plastic bag or something + towels) squeeze bottle to try keep still for a minimal of 5 minutes preferably 10 mins) ie hold the loo for as long as possible. keep very close to loo until go (prob several times in a short space of time) caused stomach cramps for a wee bit, didnt have that effect with the picolax prior (just lots of poo spraying) good luck