how good are b12 injections Shots: Vitamin B12 Benefits, Uses, Risks Best Vitamin B12 Injection Sites
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Oral high-dose or sublingual preparations may be considered as alternatives in some patients, but only where agreed with the clinical team and with appropriate monitoring, as absorption via these routes is less predictable after sleeve gastrectomy

Al, obese Zucker rats were received a dose of 500 micrograms/kg of body weight over the course of 19 days

[DOI] [PubMed] [Google Scholar] 229.Puigserver P, Wu Z, Park CW, Graves R, Wright M, Spiegelman BM

This vendor sets the standard

Until those studies exist, subcutaneous injection remains the only route with dosing predictability

This is true for patients with certain health issues or those who have had bad reactions
