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All natural lipotropic B12 injections show no signs of side effects other than possible irritation of injection site

PMID 18443711

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Vitamin B12, or cobalamin, is an essential nutrient vital for energy production, nervous system function, and healthy red blood cell formation

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While biotin deficiency is relatively uncommon, individuals with certain metabolic conditions, those taking long-term medications such as anticonvulsants, or patients with poor nutritional absorption may benefit from intramuscular administration