what needle to use for b12 injection size im Is this the right size needle for im injections? : r/B12_Deficiency How Often Should You Get
Description
Another good reason is that some people have quite a strong adverse reaction to methylcobalamin injections

Health Products Regulatory Authority

Leads in Evidence-Based B12 Treatment TrimBody M.D

Evaluation of vitamin B12, folate and ferritin serum levels in Jordanian population
