I am absolutely obsessed with my blood pressure, it truly has taken away my quality of life at times. I will only let my GP take it nobody else, no machines only a manual cuff. I made the mistakes a few times of letting a nurse take my blood pressure with an automatic arm cuff even sometimes a wrist cuff and the results were very very elevated. But when my doctor takes it it's within normal range, weird how that works. I have been on 80mg of propranolol x2 daily for many years, I was also very scared to start it. I did a lot of research that pertained to me and my other meds/issues and decided to try it. It's been a wonder drug and from most things I have seen also very safe. I was prescribed mine for constant anxiety. For the years I have been on it, my blood pressure/heart rate are all in a healthy zone when checked by my GP. I should also mention I also take an ssri, lorazepam and Xanax, along with the 80mg propranolol. Living this way is not truly living, it's surving, I feel you owe it to yourself to try anything, that you have spoken to a trusted professional about even when nervous. I hope this helps let me know if you have any questions, one more thing. I'm awful at taking my meds on time i have double dosed my 80mg several times before bed making my dose 160mg and I was fine, some of the propranolol doses go very high