I can still taste Moviprep whenever I think of it.
I've had one colonoscopy, in 2019, and can say with complete confidence that the preparation was worse than the procedure itself. Slightly dazed from the sedation, the colonoscopy just felt like I needed to do a massive fart that wouldn't shift, but I was fully compos mentis for the Moviprep and my god I still dry-heave when it crosses my mind.
The first couple of sips were alright. Then I took the third sip and I started to feel a bit queasy. Then I realised I had to get through loads more of the fucking stuff. Every mouthful got worse and worse and worse. I couldn't even pause for a bit and return to it later because the nurses were constantly walking past, gently reminding me to keep drinking.
For those who've never had Moviprep, imagine, if you will: a glass of lemonade that's been left out in the sun for 24 hours, it's gone flat and lost most of its flavour, a drunk bloke has walked by and pissed in it, then someone has picked it up the next day, put it in the microwave for 30 seconds, added wet glue to it, and served it to you.
Ghastly.