can vitamin b12 injections cause diarrhea Hydroxocobalamin (Vitamin B12): Uses, Alternatives, Side Effects & More Vitamin B12 shots: Uses, benefits,

+ Common signs of low B12 include persistent tiredness or low energy, brain fog or poor concentration, pins and needles or numbness in the hands and feet, a sore or red tongue, mouth ulcers, low mood, and looking pale

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In people whose vitamin B 12 deficiency is related to overgrowth of intestinal bacteria, treatment with oral antibiotics such as tetracycline (sold under several brand names) may stop bacterial overgrowth and allow the absorption of vitamin B 12 to return to normal

Observational studies have suggested associations between maternal B12 deficiency during pregnancy and several outcomes, including: Possible increased risk of preterm birth Low birth weight Developmental delays in infancy Potential pregnancy complications Certain groups are at higher risk of B12 deficiency, particularly women following plant-based diets or those with malabsorption conditions