"Pernicious Anemia", StatPearls , Treasure Island (FL): StatPearls Publishing, PMID 31082033, retrieved July 15, 2025 "Vitamin B12 or folate deficiency anaemia Diagnosis"
Poor health outcomes in infants with vitamin B 12 deficiency include anemia, abnormal skin and hair development, convulsions, weak muscle tone, failure to thrive, mental developmental delay, and potentially abnormal movements.[4-8] Well-recognized at risk groups are exclusively breastfed infants of mothers with B 12 deficiency due to minimal or no dietary intake of animal products[9-21] or pernicious anemia caused by a maternal malabsorption of B 12 .[18,22] Infant vitamin B 12 status can be improved through maternal B 12 supplementation during pregnancy and lactation.[23-26] Deficient mothers who miss the opportunity to supplement during pregnancy should still be encouraged to supplement during early lactation since infant vitamin B 12 status correlates with milk vitamin B 12 levels in breastfed infants up to 6 months of age.[27-30] Although there are cases reported of exclusively breastfed infants with vitamin B 12 deficiency having biochemical and clinical improvement through adequate maternal supplementation alone,[9] direct supplementation of the infant is recommended when such treatments are available.[31-33] Drug Levels Methylcobalamin is the major form of vitamin B 12 in milk
Either way, the following tips can give you some control over the process and make self-injections less stressful
30 days reconstituted (refrigerated)
However, the existing evidence is still limited and not strong enough to establish a definitive connection
Whether youre struggling with chronic tiredness or just want to optimize your health, B12 injections can be a simple and effective solution
