"i was prescribed nadolol for anxiety and thought it wasn&#039;t going to work as i have been on xanax and klonopin to treat anxiety attacks in the past. i started on 20mg 2x a day and was moved up to 40mg 2x a day. it has helped to an extent, i still have anxiety but they are a lot less frequent then they used to be. i do however have some side effects from this medication that the dr. dont seem to be too concerned about and i was wondering if anyone else who is taking this medication for anxiety have had them. i get very lightheaded or dizzy if i get up from a lying position and have to wait a few minuets before i get up and sweats. anyone else have these side effects?"