can b12 injections cause migraines

Vitamin B12 Injections - Philadelphia Medical Group Sold per Bottle:10 mL non returnable Methylmalonic acid (MMA) : Elevated levels indicate functional B12 deficiency [*] https://mskdoc.co.nz/wp-content/uploads/2025/07/BPC-157-and-Healing-Peptides.jpg

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