I use it also and have for 30+ years.I take it for a very fast heart rate and it does work well for that and no side effects at least for me. I also get migraines and I do not think that has helped them but since I have been taking inderal for so many years it might have helped them a bit. I am still searching for a magic pill to help me. Fioricet seems to come close but I stopped that several months ago since my doctor thought I might be addicted to them. I wasn't I just stopped them CT and no problems except my migraines are back full force. Wish I could help you more but give the inderal a try it is a good drug.