b12 injections versus oral supplements Vitamin vs. Supplements: Which is Right for You? Lipotropic Injections vs. Oral Supplements:
Description
[2] Hydroxocobalamin is administered via intramuscular or intravenous injection to treat and prevent vitamin B deficiency, particularly in conditions like pernicious anemia where oral B absorption is impaired

If you have an allergy to any of the ingredients in Methylcobalamin Injection, avoid using it

Ask your clinician before starting any new compounded injection
Cyanocobalamin (Vitamin B12)..............5000 mcg Benzyl Alcohol (preservative).................1.0% v/v Sodium Chloride.................................0.22% w/v Ammonium Sulfate...............................0.1% w/v Citric Acid..........................................0.01% w/v Sodium Citrate..................................0.008% w/v Inject subcutaneously or intramuscularly

The NHS recommends an intake of approximately 1.5g per day of B12 for adults via diet or supplementation

A rapid and efficient assay for the characterization of substrates and inhibitors of nicotinamide N -methyltransferase