b12 injection subcutaneous vs intramuscular for cattle B-12 vs. Injection b12 injection subcutaneous vs.intramuscular Subcutaneous

This is lower than NAD IV and higher than oral or nasal methods

9 In light of these findings, long-term use of these medications should be periodically reassessed, particularly in patients with other risk factors for vitamin B 12 deficiency

Everything here comes from published preclinical research

In rare cases, people may experience allergic reactions to vitamin B12 supplements or injections

Patients following such a diet, should be advised to take oral vitamin B 12 regularly

UK guidance (MHRA and NICE) advises checking B12 levels in patients on metformin who develop symptoms of deficiency (anaemia, neuropathy) and considering periodic monitoring in those on long-term therapy