OMG! I WILL have to look this up because I take 2g C with my mfolate! But I read that C + mfolate -> raise BH4 and I have BH4 issues. The damn BH4 test is $300 so I can't test BH4 and then try while separating mfolate from C. I have not had a single BH4 test yet, but my father had no detectable BH4 in him when he died so now I have a burning need to know how my BH4 is doing. It may be that if I could measure and thus control BH4 to correct it that I would become unstable tho as I am pretty sure it is the BH4 deficiency preventing me from sensitivity to methyls in rgeards to my two COMT +/+.
But let's rationalize this...I achieved a perfect Hcy of 6.3 even taking 800 mcg metafolin plus 2g mineral ascorbates at the same time. So...now I find it hard to see why I should change? I hit the target, so...?
Vitamin C helps Bh4 by aiding recycling from BH4 to BH4. Mfolate aids BH4 but I have not yet heard a real reason how it does it. The fact that vitamin C destabilizes mfolate is independent of the fact that both help BH4 levels.
Note I think buffered mineral ascorbates have a much less deleterious effect on Metafolin absorption. I think ascorbic acid is MUCH worse. I can attest to this by personal experience. Makes sense theoretically as well.
Your COMT +/+ while a challenge in its own rights is actually very protective against a low BH4 (less needed to make catecholamines since more are lying around longer). However, the COMT +/+ will do nothing for serotonin production which is just as important as dopamine.
As you probably know, BH4 mitigation is also based on removing factors that lower it such as aluminum, ammonia. etc. BH4 is used with adb12 in reducing peroxynitrite. BH4 is key for making NO and for functioning of the urea cycle. That is a lot of demands on one poor little molecule.
But one of the biggest drains is of course inflammation. The production pathyway for biopterin is shunted to neopterin when there is high inflammation. Some of Yasko's latest presentations suggest this is maybe the MAJOR pathway disruption of BH4 at an epigenetic level.
Your homocysteine look great. But it is not the only relevant diagnostic. More important is how you feel. Do you have enough neurotransmitters? What are your energy and pain levels like? How do you sleep, etc.? Lab tests are sometimes of limited utility.
Btw which test are you referring to for BH4? Which company? Do you mean a neopterin / biopterin test or something else? Just curious.