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Can age or health problems slow down how fast B12 works
The FDA approves bacteriostatic water specifically for injection
Oral supplements work for most people if the body can absorb them properly
[63] found no acute effect on glutamate in healthy volunteers treated acutely with benzodiazepines, though glutamine levels increased
Starting vitamin B12 treatment without appropriate assessment can make later test results harder to interpret and may delay investigation of another condition
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