Haven't given up the regimen at all. Let me explain.

My last cycle ended some 8 month ago and the next one was not supposed to happen until late December (following a pattern my cycles had for the past 5 years). So I'm on a maintenance dose and did not have my 25(OH)D checked lately. 

Until I do, and since it looks like I'm starting a "surprise cycle", I tried my best to prevent the nocturnal attacks (for daytime attacks I have O2).

Note that the attacks I'm getting are very similar to those I got on my previous cycle - reduced intensity, evolving rather slowly, easily aborted. So I'm not 100% PF but the regimen DOES work for me. Think 80% reduction in triptan use and even in energy drink consumption.

I also take Amitriptyline for several month now, for a chronic neuropathic pain on the other side of my face. It was almost as horrible as CH for a while, really frightening and debilitating. A small dose of Amitriptyline helped me almost right away, and I'm taking it since.

I made my own research and consulted several doctors about this. Amitriptyline is in use for over 6 decades. It is considered extremely safe in daily doses of up to 300mg. I'm using only 10-20mg.

Like others here, I already used it in the past in larger doses as a preventative, with little success. For the past 4 years I was also using Melatonin in large doses with decent success (nocturnal hits became less violent). 

So I had both and during my last cycle (a few day after getting the 67ng/ml results) I tried combining them. At that point  I had 2-3 of these reduced intensity hits every night. Not too painful but it did mess up my sleep and empty my O2 tank incredibly fast. It changed over night when I added 10mg of Amitriptyline to the Melatonin I took before sleep. After a few other PF nights my daytime hits gradually stopped and the cycle ended.

I was surprised - didn't believe my luck - that such a small dose even made a difference. I suspected a coincidence - maybe it was just the end of the cycle? Maybe it was my 25(oh)d just reaching the sweet spot? So I tried the combination and it worked. 

Maybe it works just because I'm also somewhere on the upper end of the 25(OH)D scale. And if so, maybe it's an option for the 20-25% that don't get a noticeable relief from the regimen. I think it might also be used as a transitional treatment until you build enough D3 using the regimen.

Already took a 50K IU loading dose and upped my daily D3 intake to 20,000 IU. In a few days I believe I'll take a new test  and will soon know where I stand. It's reasonable to think my D3 dropped because I've been a bit sick lately.

Anyhow, I'm not as lucky with the regimen as others - didn't get PF in a few days and not even when I got to 70-75ng/ml. So I aim to 85 this time.

Thank you Batch. Sure I will.