where should you inject a b12 shot Injection Frequency: How Often Get Shot? Best Vitamin B12 Injection Sites:

Cyanocobalamin may also be used for improving energy levels, boosting metabolism, and promoting healthy skin, hair, and nails

This is vastly more dilute than topical formulations, but isolated cells in culture have direct peptide access without any barrier to penetration

Conditions associated with elevated B12 levels include: Liver disease : Hepatocellular damage releases stored B12 into circulation, with levels correlating with disease severity in conditions such as cirrhosis, hepatitis, and hepatocellular carcinoma Renal impairment : Reduced kidney function decreases B12 clearance, leading to accumulation Haematological malignancies : Myeloproliferative disorders, acute leukaemia, and polycythaemia vera can elevate B12 through increased production of B12-binding proteins (transcobalamins) Solid tumours : Certain cancers, particularly those affecting the liver or gastrointestinal tract, may elevate B12 levels A specific concern relates to cyanocobalamin in patients with Leber's hereditary optic neuropathy , a rare mitochondrial disorder

This is not ordinary tiredness but a profound lack of energy that does not improve with rest