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how to b12 injections work Best Vitamin Injection Site: Administering B12 Shots Vitamin B12 Injections: Benefits and
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For background and my updated recommendations, see my extended look at vitamin B12 in the related posts below

Mistake 4: not rotating injection sites Injecting in the same spot repeatedly can cause lipodystrophy, localized areas of fat tissue changes that affect medication absorption

To ensure the absorbance from oil red O staining was within the linear detection range of the plate reader, a calibration curve was established for oil red O staining in adipocytes using a previously described protocol.[23] 2.12

We need more research in this area
Conditions that reduce stomach acid production, such as atrophic gastritis or the use of acid-reducing medications, can contribute to deficiency