The proper dose of B12 to stay healthy Those who are likely to need B12 shots include people with the aforementioned symptoms as well as those with illnesses like pernicious anemia, atrophic gastritis, infertility, heart palpitations, celiac disease, Crohns disease, pancreatic insufficiency, or AIDS
Some plans may also have specific rules about where you can get these injections and who can administer them, requiring you to go to a certain facility or see a specific provider for the treatment to be covered
The resulting anemia is known as megaloblastic anemia and is the symptom for which the disease, pernicious anemia, was named (3)
Summary: Vitamin B12 treatment typically begins producing early haematological responses within 34 days, with neurological symptoms starting to improve within 12 weeks, though complete symptom resolution may require several weeks to months depending on deficiency severity and treatment route