I went in expecting to have sedation for the procedure but decided to go for gas and air with throat numbing, and I'm so pleased I did this. The procedure was very quick and the doctor was very kind and reassuring, and it really wasn't as traumatic and unpleasant as I had feared. If you feel reasonably brave and confident you can keep still even if the procedure is a bit unpleasant, the gas and air makes things not too bad. I kept my eyes closed and tried to take myself into a bit of a trance and within 2 or 3 minutes the whole thing was finished. The benefit of the gas and air was that after a few minutes I was able to go home, and was allowed to drive and continue with my normal day without needing supervision or care. Apart from a very mild sore throat I feel completely normal again. When the camera is in your throat you can breathe normally through your nose, and just concentrating on that took my mind off what else was going on (bear in mind my eyes were closed). I didn't really feel an issue with gagging, just a sense that it would be quite easy to panic and so I concentrated on keeping still and not allowing that panic to take hold. I'm by no means a very brave person, but if you're at all unsure go with the sedation. This is me simply recording my experiences. I didn't feel any pain, just slightly unpleasant sensation.