Yes they can be used for high blood pressure, I didn't have that, so they've lowered it a bit but not enough to worry about.
To be honest they are both good and bad. They were brilliant in the beginning as I really needed something to calm me and my system down and they work. They stopped the heart racing. They also stopped the ectopics a bit but not fully (this is typical).
However I wasn't warned about not being able to exercise and about weight gain. So unfortunately I have a bit of that going on at the moment. I would warn anyone thinking of taking them to weigh up the pros and cons. They are an absolutely wonderful drug if someone really needs them, but they come with these other effects, not in the beginning, but over time......and it's gradual so you may not notice it (especially if not forewarned).
If I had the time again, I'd have taken a month's course of them then gradually weaned off and kept some for 'one off' episodes (some people just have them for a bad day and not all the time) only.
I am now trying to wean off them and was doing really well until the last 8 weeks when I had all this flare up of symptoms (but not because of weaning off, it's going to be something else, like hormones, stomach problems and anxiety)
Take care
I should say, you can still exercise, it just depends on how the dosage affects you. Some people say they can't do a thing. Me, I can exercise at a low dose but it isn't the same.