glad you are excited about this topic!
b100 3x/day is fine if you're going on the assumption that you need a boost just to get up to the same levels as average joe healthy person.
personally i think a week is very conservative.
could you clarify your concerns regarding taking one of your b100 complex pills each day over the longer term? the only one that stands out for me is B6. but you don't have to take B100 once a day for the rest of your life, either. just see if it helps you out!
the only time i have had a problem with b-complex is when i got one with 1000 mcg folic instead of 400. my levels went sky high and i developed a 'phantom itch' which drove me crazy until i discovered and eliminated the culprit.
also we've had an update on best forms of magnesium thanks to shye - magnesium glycinate ('albion process chelated') seems to be the form of choice at this stage - more absorbable, fewer GI side effects.
i recently ran across some other mention of burning sensations and deficiency which was new to me and not related directly to d3 or magnesium or b-complex.. it didn't stick so will have to go back and review to see if i can rediscover it. will keep you posted when/if i turn something up.
you may find some benefit to the thyroid with a good b complex program.. acid reflux meds bug me A LOT (my doc gave me some nexium samples but i can't do it, i tried but it just seems wrong to me). IMHO there is nothing wrong with the stomach acid, the problem is with the faulty sphincter. to me the focus should be on sphincter function.
here's a bit of reading on those meds:
From the book: Herb, nutrient and drug interactions: clnical implications and therapeutic strategies
Gastric Acid-Suppressive Medications
Cimetidine and Related Histamine (H2) Receptor Antagonists
Omeprazole and Related Proton Pump Inhibitors
Evidence: Omeprazole (Losec, Prilosec)
Similar properties but evidence lacking for extrapolation: Esomeprazole (Nexium), Iansoprazole (Prevacid, Zoton), pantoprazole (Protium, Protonix, Somac)...
Interaction Type and Significance
Probability: Probable or Possible.
Evidence base: Emerging and Mixed.
Cimetidine may significantly decrease net calcium absorption and transport across the intestinal lumen to the mucosa..
to read about all the various studies, search google books for this book and view page 483.