Funny you would ask. I am a CF geezer, having turned 63 this year. Another topic post asking about migraine and sinus headaches reminded me of my introduction to a beta blocker, in this case metoprolol. I didn’t have high blood pressure per se, rather several spikes precipitated by my hair triggered adrenal glands. Reasons aside, I took metoprolol for over ten years with no side effects.
Not particularly on your subject but again I am taking metoprolol for blood pressure that recently went crazy, like 200/40. I have only been taking for the last three months so this probably is no help with your question, but I find it still very effective and for me, free of side effects.
The type of blood pressure medicine you can take includes several choices so if you fear taking a beta blocker, there are completely different families of BP meds available. On the other hand ain’t it a kick getting diseases of old age!
LL