are b12 injections better than tablets vs Tablets: What You Need to Know B12 Injections or Oral B12:

For daily maintenance and optimization, oral or sublingual methylcobalamin is effective, convenient, and far more sustainable than recurring injections

[57] FDA explains that the MAUDE database is a passive surveillance system, and that incidence, prevalence, or cause of an event cannot be determined from this surveillance system alone due to under-reporting of events, inaccuracies in reports, lack of verification that the device caused the reported event, and lack of information about frequency of device use

Conclusion: Optimizing Your B12 Replacement Therapy Understanding the right dose of Vitamin B12 is key to effective therapy

Methylated B12 Injections, available in this 1mg lyophilized form, provide an efficient source of vitamin B12, harmonizing with the functional medicine philosophy of optimizing health and well-being