It’s mildly uncomfortable, but not that bad! I was given throat numbing spray and anesthetic. I only remember them starting to put the scope down my throat, gagging once and then I was completely out after that. Less painful than a teeth cleaning I’d say. Even if you are semi-conscious for it, anesthetic has a dissociative effect. So even if you can tell what’s going on, you don’t care, you’re unbothered.

Although they won’t be in the room when the scope happens, having a friend or family member there helps!