come in many different forms--some of them are more potent against stubborn HBP than others. If the one you're on is making you feel heavy, listless, fatigued or other some effect, you might want to brush up on the class your med is in, and research other drugs in the same category. For an example, I was taking propranolol in the form of Inderal LA for years. After my second heart attack, the cardiologist prescribed a different drug, Ternormin (atenolol) which is a different beta blocker. It made me feel like I was breathing underwater--heavy, having to breathe way too hard after a simple walk, etc. About two years later, I was started on Lopressor, yet another beta blocker, and it was on the opposite side: still having high pulse, HBP, etc. I protested when I was prescribed both, but neither of the doctors involved would listen to me. Finally, when I got back to home in Massachusetts, I got a doctor to listen to me and was put back on the propranolol which just about perfectly works--no high pulse, my BP is now actually low (96/54 the last time it was taken in the doctor's office). So press on with your doctor to get what you need that fits your situation.
As for the panic attacks, having been on the other side of that (I drove myself to ER and was told I was having a panic attack when I actually DID have a heart attack), I know that it's frustrating. As you are already aware of some holistic types of treatment, have you tried guided meditation? Meditation might help you in the beginning of a panic attack--give you time to calm down and relax, I'm not saying it's what everyone should try, but it's worth giving it a try.
When I had my first heart attack, I had already been diagnosed with heart disease, and had had an angioplasty with two stents. I knew it was a heart attack, because I had taken 3 nitroglycerin tablets and was still having massive pain. I was only 43 when it happened, so some people assumed I was a hypochondriac and was having a panic attack. Later that year, I had massive pain again, and taken 15-20 nitroglycerin tablets over the course of the evening. I went to the ER, given a prescription for Ativan and sent home. A week later, I was in the hospital after being told I had had a second heart attack. What I'm trying to say is that you and you alone can tell what's going on inside of you. You just need to show you're knowledgeable about your health, and if a doctor tries to stonewall you, you need to call him or her out on it. You need to keep slamming home the point that you are not a child and don't need to be treated like one. Eventually, you will find a doctor who will be sympathetic and listen, not just an idiot staring at a wall for 15 minutes while you tell him or her how you feel.
As far as grief is concerned, have you thought about a grief support group? There are many people out there going through the same thing you're going through, and some of them might be able to reassure you of that. Google to see if there is a group close to you, and take the initial move of going to one to see if it meets your needs. Every little bit will help.
BTW, here is one website I found on meditation which you might be interested in. Good luck, and let us know what happens.
http://www.selfhealingexpressions.com/meditate.shtml