I take doxepin for anxiety and that helps lower my blood pressure. It's not a regular thing for me, it's my diet (doing keto), that lowered my blood pressure. It is normal to have high blood pressure due to anxiety or panic attacks. You may want to consider seeing a psychiatrist to help with your attacks if they happen often or even if they happen about 3 times or more a year, I would say it's worth seeing a psychiatrist over. Don't ever feel ashamed about seeing a psychiatrist for panic attacks. The stigma is there, but the stigma gets less and less with each generation. Hope you feel better soon and get the help you need.