Wilson, I am a new member take my knowledge and experience softly as I am far from being an expert, but I have been suffering for over 14 years.
You sound like your in my boat house! My preventives are Verapamil 480mG Extended Release tablets and 1000mG Depicote. This keeps the shadows and the occasional random attack away most of the year, now I cycle out once to twice per year. When that occurs the only thing that will abort my attacks is Sumatriptan 6mG auto injector pen, which is a scubQ injection. From my experience, the pill form doesn't work as my attacks come on way to fast for the pill form. All the years I have been on Sumi tell me that it can not even in pill format be used for preventive measures. Oxygen does work for me only if I am awake and catch the attack in time, and I am currently in a cycle and getting about 5 attacks per day but most of them hit while I am sleeping which makes the O2 useless. I can tell you this if Sumi helps take away your attacks and you can bear it, a large bag of ice over the side of my head that gets the attack can help abort some attacks if I catch it in time. The extreme cold basically does the physical effect of a vaso constrictor just as Sumi does to your brain vessels. So the ice may help you. And a cheap bag of ice far exceeds the dollar and cents of using Sumi. I am going to try and start using O2 therapy with ice and my preventives and see if I cannot find a healthier and affordable means of aborting my attacks. I still haven't found a way out of a cycle yet, the only thing that works for that is time. Currently my cycle is 8-10 weeks.
Hope it helps.
