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Oral supplements work for some, but if you have absorption issues, injections are much more effective
For some people, especially those with certain genetic variations like the MTHFR mutation, converting cyanocobalamin can be a challenge
A blood test tells you where you actually stand
This is a drug wastage tracking requirement, not a separate payment modifier
Only a medical professional should use this site because it's really close to major blood vessels and your sciatic nerve (which could be damaged if the injection is not administered properly)
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