b12 injections mouth ulcers Vitamin deficiency: Symptoms include white, lacy patches and open sores inside Vitamin B12 Deficiency: Symptoms, Causes
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Research findings are preliminary and do not imply safety or efficacy.
Always adhere strictly to prescribed schedules and concentrations

doi: 10.1016/j.clinbiochem.2012.01.016

It is common to experience worsening pain for several days after the injections, with full relief coming within 7-10 days after treatment

So, it is an issue that can equally affect both the young and the old
