I too had been on Inderal LA 180mg. for at least 15yrs. I originally was on it for migraines. Then in 2000 I had a heart attack and the cardiologist just kept me on it because as a beta blocker it was also used for angina. Recently my insurance co. stopped paying for it and the cardiologist switched me to another beta blocker, atenolol. I was afraid to make the switch but could not afford to pay for the Inderal. Also the DR said that Inderal LA was being discontinued. Its been about 2 months now and I have not had any problems. Beta Blockers are also used for high blood pressure so maybe you should check with your Dr.