Yes, Audrey beat me to it!
Balance problems may be due to low B12. Your friend may even have methylation problems (MTHFR mutation), and need both methylcobalamin and methylfolate. This can be tested for or just assumed and the methyl versions used anyway -- if there is improvement quickly, that would suggest this genetic error.
23andme does the testing OTC for $99.
Standing up with the eyes closed, and falling backwards, is called the Romberg's sign. It often is present when B12 is low.
You can buy methylcobalamin now at Costco and Walgreen's and most online places. It is slowly replacing the cyano form in supplements. It is inexpensive and only pennies a day. The old cyano form requires 4 steps to be activated in the body in order to work, and this may fail. Take any oral B12 always on an empty stomach for best absorption.
This is my B12 thread:
http://neurotalk.psychcentral.com/thread85103.html
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All truths are easy to understand once they are discovered; the point is to discover them.-- Galileo Galilei
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Weezie looking at petunias 8.25.2017
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