b12 complex injections side effects Are Shots Safe? Royal Palm Beach Medical Group Common & Rare Side Effects
Description
Evidence for non-injectable routes is limited at best

Will absolutely continue using I feel great

British Journal of Haematology , 166(4), 496-513.

Without enough B12, you can feel drained, mentally foggy, and even experience mood swings

Other causes include certain medications and medical conditions hindering B12 absorption
