how safe are vitamin b12 injections Safe? Best Vitamin B12 Injection Site:

A b12 injection is a direct and effective way to treat a diagnosed deficiency

Why Vitamin B12 Matters in Pregnancy Vitamin B12 supports healthy foetal brain and nervous system development Symptoms of vitamin B12 deficiency may include fatigue, brain fog, anaemia, or numbness and tingling in the hands or feet Management may involve increasing dietary B12 intake, supplements, or B12 injections under medical guidance Roles of Vitamin B12 in Pregnancy Vitamin B12 is required for healthy foetal nervous system and brain development

Over 7 days, thats 30 mg/day 7 = 210 mg/week

Fokkema et al., After introduction of animal food, the cobalamin level increases and peaks at 37 years and then decreases, median plasma tHcy decreases and remains low until 7 years when it starts increasing, whereas median plasma MMA decreases after 12 months and remains low throughout childhood (Monsen et al., 2003)