Colonoscopy prep question

Hi everyone, new here!

I have a colonoscopy booked for not long from now and I was wondering if anyone was given Senna tablets to take for 3 nights before taking the stronger laxative sachets? I haven’t heard of this before and wondered if it was normal?


I have extreme reflux at the moment that’s even going into my nose, throat and mouth so very concerned how all of these laxatives will affect my stomach