The same with me too, the propranolol really helps the nerves. I also think you should tell the dentist that you have got a problem and then if you have to keep cancelling at least they know why. I have a lovely dentist and he knows all about it and just as I have started to get more realxed about going, I have to change dentists. I'm gutted because he knew that I was often late and that I had a problem. When I have to see my new dentist I shall be telling him all about my diarrhea problem straight away. It took me a long time to confide in him and it instantly took away a load of the stress and worry because he knew that I might have to get up when having something done. I get so many teeth problems that I can't avoid it. I have to take 2 immodiums a few hours before I need to go to an appointment. 3/4 hours ish and when I start peeing a lot I know that they have kicked in. I wouldn't have been able to get out of the house at all over the years without it. Thank god for it. I know a trip to the dentist is a nightmare, without worrying about the teeth.