Hey Slacker,

You're not alone.  I know what you're going through... It's happened to me and there are others reporting a similar recurrence of their CH over the last month or so...

I suspect the culprit is a high pollen count that's triggered an allergic response that's consuming the active vitamin D3 metabolite, 1,25(OH)2D3 at rates that leave too little to prevent CH.

I had a few days of burn through hits in mid March when the Alder pollen was coating my pickup like someone had dusted it with a bag of Portland cement.  The burn through hits started again in early April when the Maple pollen was turning my pickup yellow...

I've tried a few things that appear to have been effective in getting me back to a PF state...  The first is increasing the magnesium intake to 600 to 800 mg/day.  Magnesium is essential in the enzymatic processes that metabolize 25(OH)D to the active metabolite 1,25(OH)2D3. 

I also started the three month course of vitamin B 50 complex that Dr. Stasha Gominak suggests to her headache patients taking a similar vitamin D3 regimen. 

She's been prescribing this regimen for over six years and has the clinical data to back it up...  She added vitamin B 50 when some of her patients reported the basic regimen wasn't as effective as it had been in the past.  It worked...

B 50 is essentially a formulation of 50 mg each of the seven B vitamins and it should take care of any vitamin B deficiencies. 

Along with the B 50, I also started taking 1000 mg vitamin C two to three times a day every two hours.  The half life of vitamin C is 30 minutes after reaching C_max.

Finally, I started popping 3 to 5 of the 5,000 IU vitamin D3 liquid soft gel capsules between my back teeth and holding the contents between my cheek and gums and kept it there for 20 minutes without swallowing.  I did this prior to bed at night as most of my burn through hits were coming while sleeping...

It takes a couple days for the 25(OH)D to build, but the vitamin D3 serum concentration goes up rapidly as it bypasses the lower GI tract and passes directly into the bloodstream through the cheek and gums.

The net effect was very short aborts when using oxygen therapy with hyperventilation and a pain free response by the second to third day after starting this method of taking vitamin D3.

You should be able to improve the effectiveness of your oxygen therapy and shorten the abort times by hyperventilating with room air for 30 seconds then inhaling a lungful of oxygen and holding it for 30 seconds...  Repeating this 4 to 5 times should be sufficient to abort most of your CH...

The important thing is the breathing technique while hyperventilating...  This breathing technique is called hyperventilating at forced vital capacity tidal volumes... 

You do this by standing with your jaw dropped like saying the work "Haw." Standing gives your diaphragm full range of motion and this increases lung ventilation.

Start this breathing technique by exhaling forcibly until it feels like your lungs are empty... they're not.  At that point do an abdominal crunch like doing situps and hold the squeeze it until your exhaled breath makes a wheezing sound for a couple seconds...  then through your shoulders back, head up and chest out and inhale rapidly using your diaphragm.

You should be doing 10 complete respiration cycles every 30 seconds while hyperventilating with room air...  Keep repeating this sequence until the pain stops completely.

If you're doing this properly, you should feel the symptoms of paresthesia when you inhale the 100% oxygen...  A very slight tingling/prickling of the face, lips, fingertips and chest area.  These sensations will build for 10 to 15 seconds after inhaling and holding the oxygen then dissipate until they're almost gone after 30 seconds when your restart the complete sequence again.

Take care and please keep us posted.

V/R, Batch