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There are rare occasions where vitamin B12 causes allergic reactions or sensitivity
Depending on your circumstances, multiple injections may be necessary to achieve optimal B12 levels
He had the nurse show me how to self inject in my thigh and gave me a prescription for 6 months worth of shots
One such version is known as hydroxycobalamin and this form of B12 occurs in nature much like methylcobalamin
The conservative approach is to continue using the vial but be aware that effectiveness may be reduced
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