b12 injection im or iv Shots vs. Infusions: What is the difference? B12 Shots at Home: How,

Very lean individuals may prefer 4mm needles

[22] Each 1 mL of Lipo-B injection typically contains approximately 25 mg of methionine, 50 mg of choline chloride, and 1 mg of cyanocobalamin (vitamin B), provided in multi-dose vials by compounding pharmacies

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If youre not sure that youre getting enough you can ask your doctor for a blood test to check your current blood levels

The only way to address high B12 is to identify and treat the underlying cause or to stop the exogenous source

Because B12 shots are administered intramuscularly, they bypass the digestive system, allowing the body to absorb a much larger amount of B12 that would otherwise be lost during digestion