Hey Lara,
Please let me second the "Good On You" to Payg. She's spot on with all her comments on oxygen therapy and the anti-inflammatory regimen with 10,000 IU/day vitamin D3 + Omega-3 fish oil and the conutrients.
I've been providing information on high flow rate (15 to 40 liters/minute) oxygen therapy as a safe and effective CH abortive with no side effects since 2007 and the anti-inflammatory regimen with 10,000 IU/day vitamin D3 since I developed it in late 2010... I estimate over 600 CHers have started the this regimen to prevent their CH since December of 2010. 83% of CHers taking this regimen have experienced a favorable response in the first 30 days and 54% experienced a complete cessation of CH symptoms...
Vitamin D3 does have side effects... That said... none of them adverse... they're all very healthy and wonderful side effects...
Please see Henry Lahore's VitaminDWiki.com link on 80 medical conditions either prevented or successfully treated with vitamin D3 + the conutrients...
Multimedia File Viewing and Clickable Links are available for Registered Members only!! You need to

or

If your PCP or neurologist says vitamin D3 is toxic at a dose of ≥ 10,000 IU/day or if your 25(OH)D serum concentration is 80 to 100 ng/mL... or higher... Ask for a copy of the study that says so... They don't exist...
Most of us would need to overdose on vitamin D3 at > 50,000 for more than 4 to 5 months to even come close to hypercalcemia... too much calcium in the blood... Even then, all we would need to do is stop taking the vitamin D3 for two months (that's the half-life of serum 25(OH)D) then resume taking the vitamin D3 at a lower dose.
There are multiple sclerosis patients in Brazil taking the Coimbra protocol that calls for a dose of vitamin D3 up to 1000 IU/Kg body weight/day plus the same cofactors we take with the anti-inflammatory regimen... For a sleek rascal like me weighing in at 95 Kg, I'd be taking 95,000 IU of vitamin D3 a day.
It's interesting to note that none of Dr. Coimbra's MS patients suffer from hypercalcemia... What is amazing is 95% of his MS patients are in complete remission from MS and are living very normal lives... The only thing they need to do is abstain from taking calcium supplements or eating calcium rich foods i.e., dairy products... See the following link for more details...
Multimedia File Viewing and Clickable Links are available for Registered Members only!! You need to

or

Dr. Coimbra also explains this vitamin D3 protocol is also effective in treating autoimmune disorders...
Knowledge is Power... Know the subject matter cold... In this case, everything you can find about vitamin D3 so that makes vitaminDWiki the place to go. Then if your PCP or neurologist pitches a hissy over you taking 10,000 IU/day vitamin D3 to prevent your CH... you have the facts...
If you run into continued resistance, just remind your PCP or neurologist... there hasn't been a single death attributed to vitamin D3 in the history of the FDA's Adverse Events Reporting System (FAERS)... They cannot say that about verapamil or any of the other prevents, anti-epileptics and anti-psychotics frequently prescribed for CH...
Finally, take along a copy of the suggested anti-inflammatory regimen treatment protocol titled: CH Preventative Treatment Protocol for Neurologists at the following link on the VitaminDWiki website. That way you'll all be singing from the same sheet music if either agree with this regimen. I just checked, this treatment protocol has been downloaded 2077 times.
Multimedia File Viewing and Clickable Links are available for Registered Members only!! You need to

or

Take care and please keep us posted.
V/R, Batch