As a psychologist, I found the antidepressants work the best. Though I don’t prescribe meds, I work with psychiatrists that do. Actually imipramine is phenomenal at preventing and controlling them. It is an old school antidepressant and it has three annoying side effects. Dry mouth, constipation and eye glare. The eye glare will resolve itself in a week, the dry mouth can be dealt with by chewing gum or hard candy and the constipation can be easily dealt with by eating fiber.
That said, Paxil is also good at arresting them. Antidepressants work differently for everyone so you may need to try several different ones out before you find one that works for you.
The usual course is to start out with the lowest dose then go up after a week. Then go up a dose after another week, till you go one week without an attack. Then you stay at that dose for a month, then you go DOWN a dosage. If the attacks return you go back up. Eventually you find the right minimum dose. You must take antidepressants regularly. Despite their name they are not uppers, but mood stabilizers.
I find Benzodiazepines such as Valium are very helpful in the initial treatment stage. And it’s important to build them up in your system. Panic builds on itself so you will need to take them at regular times to get your system used to them, even if you’re not panicky. Then wean yourself off them. I would not recommend longer than 60 days but each person is different. For some 60 days is too short, for others it is way too long.
I’ve also had a lot of long term success with behavior modification. The results are better long term than drugs, but the course of treatment can be up to five times as long. This is problematic, when the anxiety victim needs to function for work or social reasons.
Although it is frightening you have to remember anxiety is distressing but not dangerous. The worst thing likely to happen is you’ll panic and bolt out of somewhere, leaving people to wonder, “what was that guy’s hurry?” You don’t go crazy or die.
Good luck to you