jojo- Definitely follow the directions from your doctor first and foremost, take the pills as prescribed. The lorazepam will not hurt you!
First, I quit drinking caffeine altogether which helped immensely. Then I cut back on sugar. I found that for myself, symptoms of hypoglycemia were a huge anxiety trigger. For example, one time I ate a huge piece of chocolate cake. Then when I got home, I had a heart palpitation that skyrocketed me into full blown panic because I thought I would have a heart attack. Caffeine could also have the same effect as a huge meal, for me.
The best thing to remember is that people do not die from panic attacks. There is nothing wrong with your body, so don't let it try to fool you! You will get past this.
For vitamins, a Magnesium Citrate at night and Calcium Citrate in the morning is a good way to calm your nerves as well as aid in healing across your entire body. Mag is a really really good calming nutrient. Calcium works side by side, your body won't process the mag without the calcium. Also, you might not want to take them at the same time because of their canceling effect. I have read that it's best to take magnesium at night (it will actually help you sleep, too) and calcium in the morning for best results. A nutritionist may have better recommendations, that's just what I found online.
About a year ago, I had a mini-bout with anxiety following FFS. I ended up supplementing with mag & cal which really did the trick. Of course, I made sure with my doctor that it was okay for me to take it! Whether it was placebo or not, I felt like I was doing something good for my body which was all I needed. Sometimes taking a few steps in a good direction are all that your mind needs to clear out the anxiety to make room for calmness. You end up convincing yourself that you're okay... and that's all that needs to happen.
How often do you have the attacks? Hope you can get them under control soon. I know it is no fun!