what is the dosage for b12 injections Vitamin Injection Dose Adults Vitamin B12 Injection Dosage: 7

Reduced Risk of Anemia Prevents megaloblastic anemia by ensuring healthy red blood cell production and nutrient delivery

Olasupo Odunsi, MD, Medical Director Reviewed July 5, 2026 If you're constantly tired and your metabolism feels stuck, low B12 could be part of the problem

Vitamin B12, or cobalamin, is a natural vitamin found in animal foods like dairy and meat

While vitamin B12 deficiency is rare and most people get enough B12 from their diets, some people may be at greater risk of low B12 levels, including vegetarians and vegans, older adults and people with digestive system conditions, such as Crohn's disease and celiac disease

No adverse behavioural or toxicological observations were reported at the pharmacologically effective doses