Which quantity of propranolol should i take for current anxiety and how long does it take to have any effect?

I'm old fashioned,: And I expect some might think it's the way things are now, but prescription medications - especially those being used for off-label conditions - are serious stuff. There are warnings about who and how to take it, what to avoid, etc. It has potential side effects and w/drawal risks. Ask a doctor to prescribe the right thing for you and get all the info you can about proper use and what to expect.