After the initial period, your treatment will depend upon whether the cause of your vitamin B12 deficiency is related to your diet or whether the deficiency is causing any neuorological concerns, such as issues with thinking, memory and behaviour
MOTS-c, the Most Recent Mitochondrial Derived Peptide in Human Aging and Age-Related Diseases
You should also contact your GP if: You are unable to attend scheduled maintenance injections, as missing doses can lead to symptom recurrence You develop new symptoms that might indicate other deficiencies or health problems You are planning pregnancy, as B12 requirements may change You experience persistent side effects such as headaches, dizziness, or gastrointestinal symptoms If you experience any side effects, talk to your doctor, pharmacist or nurse
Per FY2026 Official Guidelines Section I.A, the Tabular List is the final authority
Compounding and the FDA: Questions and answers