needle used for b12 injection Ulove Prs 12 Pack 1ml Industrial Syringes with 25Ga 1 Inch Needle, Plastic Disposable Syringe and Scientific Labs, Liquids Refilling and Measuring : Industrial & Scientific B12 Injection Kit: Syringes &
Description
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5 Conclusion This systematic review and meta-analysis indicate that sublingual and oral vitamin B12 administration provide efficacy comparable to intramuscular injection in improving serum cobalamin levels and reducing hyperhomocysteinaemia

The two groups were not significantly different with respect to age ( P = 0.323), duration of oral symptoms ( P = 0.554), and vitamin B 12 level ( P = 0.895)
2003 [Google Scholar] 85
Multiple studies confirm this

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