Vitamin B12Multifaceted In Vivo Functions and In Vitro Applications Key Takeaway for MTHFR Patients If you have a known or suspected MTHFR mutation, using Methylcobalamin injections ensures the body receives pre methylated, ready to use B12without relying on compromised conversion pathways. This can Are You Suffering From B12 Deficiency? MTHFR Support Australia Here We Go Again! Pernicious Anaemia Society MTHFR, Folic Acid and Folate: Should I Eat It? B12 Deficiency, Thyroid Disease and The MTHFR Connection Dr Hagmeyer