Help! Alternative colonoscopy prep

Hello, I am a 46 year old who was diagnosed with ulcerative proctitis in January 2009. After about one year, I found remission and have been off and on in remission for the past several years, until last November. I have been in a flare that I can’t get rid of. I have had limited management of my condition. I have seen several GIs but haven’t, until recently, found one that I liked and could work with. I am scheduled for a colonoscopy on Tuesday but learned that the suprep I was prescribed is out of stock at my local pharmacy. We are trying another one or more tomorrow, but just in case I can’t get it by tomorrow afternoon when I am supposed to start it, I was wondering what others have used as an alternative, non-prescription. I have been reading about a salt water flush and magnesium citrate. My GI said that they aren’t contraindicated for my condition but she has no real experience with either and is concerned I might not be cleaned out sufficiently. Does anyone here have experience with either as a colonoscopy prep? If you have used suprep, have you experience any negative symptoms from it? I have a very temperamental Colin, but I was told the traditional stuff is ‘t Absorbed. Anyway, looking for options just I case I need to make something on my own. I don’t really want to reschedule this procedure. Any advise would be greatly appreciated.

Dx: ulcerative proctitis 2009
Meds: Lialda, mesalamine enema (no longer taking)
Supps: fish oil, renew life probiotics, vitamins D, l-glutamine
SCD Diet since 2010

2 dulcolax tablets then drank 238 grams of miralax mixed with 64 ounces of Gatorade, drank 8 ounces of this every 10-15 minutes then two more dulcolax tablets 5 hours later and finished the solution.

yup Miralax finished off with Dulcolax...but after the first couple of glasses, I couldn't stand the taste of Gatorade. LOL Miralax mixed with some clear liquid does the job though...and is tasteless! Good luck!

I just drink two bottles off magnesium citrate. One 16 hours before the scope and the next one 8 hours later. Clear fluids only for 24 hours before the scope. I have done this twice and was totally cleaned out. You can add something like dulcolax (my doc said two of them) with the second bottle if things don’t get moving. It took me 3-4 hours for the prep to start working both times. First time I was flaring, second time I wasn’t.

How much citrate if using the powdered form?

I drank as much Gatorade and coconut water as possible, water too, but keeping electrolytes up is important when prepping. Pedialyte is also good.