100mcg is nothing. If you have good functioning intrinsic factor, which your previous tests suggest you don't... it might be enough.

B12 cannot give you heartburn. Out of a 1000mcg tablet (1mg) only 13mcg on average get absorbed... in the small intestine.

Start with just this...nothing else.

Here is the chart from a research project that actually measured B12 absorption orally:

http://www.ncbi.nlm.nih.gov/pmc/arti...able/T1/#TF1-4

This study gave oral B12 only on an empty stomach.

Cinnamon and other spices may give heartburn, in anyone.

Here is a link to the new protocols of 400pg/ml. This link is a CE for doctors.
Print it out and have her read it.

http://www.aafp.org/afp/2003/0301/p979.html

She can also read this:
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2532799/
written for doctors and is the whole article the above table on B12 absorption was taken from.

And the new video:
http://www.youtube.com/watch?v=BvEiz...ature=youtu.be
contains quotes from medical experts!

You are only a messenger. This medical information exists. And if your doctor balks at the truth, find another doctor!
Alot depends on how you present this to your doctor. Educating them is difficult because they don't believe patients.