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I had back surgery September, 2022

Factors related to low serum vitamin B12 levels in elderly patients with non-atrophic gastritis in contrast to patients with normal vitamin B12 levels

Vidal-Alaball J, Butler CC, Cannings-John R, Goringe A, Hood K, McCaddon A,McDowell I, Papaioannou A

B12 is safe on its own, but a few conditions call for extra care, which is why a provider reviews your history before treatment: Leber's hereditary optic neuropathy, a rare inherited eye condition, where certain forms of B12 may be a concern for the optic nerve

Shellfish, soybeans, wheat germ oil, sunflower seeds, flaxseed, fish, and root beer could also make bruising worse