common side effects of b12 injections Shots And How To Treat Them Understanding the B12 Vitamin Shot:

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Autoimmune disorders, like pernicious anemia or atrophic gastritis, affect vitamin B12 absorption in the gut and commonly lead to depleted levels

If you tend to have digestive problems, a B12 deficiency can make them worse

Neurological changes A lack of vitamin B12 can cause neurological problems, which affect your nervous system, such as: vision problems memory loss pins and needles loss of physical co-ordination (ataxia), which can affect your whole body and cause difficulty speaking or walking damage to parts of the nervous system (peripheral neuropathy), particularly in the legs If neurological problems do develop, they can sometimes be irreversible

B6 (Pyridoxine): Can ease nausea in the first trimester and supports hormone metabolism