Hello Dr. Rynne, Thank you in advance for your professional input. I have been diagnosed with pulmonary hypertension and prescribed nadolol. I was not taking anything else new when I started nadolol. After about 3 weeks into taking this medication I began having increased memory loss and unable to comprehend what was being said to me. It was necessary to have most everything repeated 3 and 4 times. I decided to gradually come off the medication gradually, over a period of a few weeks and thank goodness all symptoms disappeared. I told my pulmonary consultant about my experience and he said he was not aware of these symptoms being related to nadolol. I am curious if you are aware of these symtoms while using nadolol.. Ernestine