I had the throat spray about twenty years ago, and the way you describe yourself, I would go for sedation. I gagged quite a bit, made some horrendous belching and brought up bile which the lovely nurse wiped up as it happened. The doctor performing the procedure also seemed a bit annoyed that I didn’t go for sedation, as it clearly takes them longer when someone is gagging, etc. I was made to wait until last on the list and labeled LIVE as I walked in. Haha. This was all normal, but you sound like it would be awful for you if you stayed awake. You also cannot eat or drink quite a while after the throat spray (I think it was several hours), whereas all the other patients that were sedated were sitting uo having tea and biscuits while I sat in the cubicle a little bit traumatised. Yes, I would totally go sedation myself if I had to do it again.