gastric bypass and b12 injections The Impact of Preconception Surgery on Maternal Micronutrient Status before during Pregnancy: A Retrospective Cohort Study in the Netherlands between 2009 and 2019 Supplements after a Gastric Bypass

[9] The most frequently observed adverse reactions are mild injection-site pain, transient erythema, and localized warmth, typically resolving within minutes

Groups at higher risk of deficiency include older adults (due to reduced stomach acid production), people following vegan or strict vegetarian diets (as B12 is naturally found almost exclusively in animal products), individuals with pernicious anaemia or other malabsorption conditions, those taking certain medications such as metformin or proton pump inhibitors long-term, and people with significant nitrous oxide exposure (including recreational use), which can inactivate B12 in the body

Your body cant make B12 on its own, so it must be absorbed through food or supplements [*]

Manita S