can you give yourself b12 injections Patients self-injecting vitamin without telling their GP, finds study How to Give Yourself a

And while adequate B12 levels are essential for good health, research has shown that additional intake will not provide additional health benefits for those who are otherwise healthy

(June 2010)

Persistent elevation should prompt an evaluation for occult disease once intake and interference have been excluded, and red flags such as unexplained weight loss or findings specific to organs are present

Heavy periods can cause iron deficiency anemia because of the amount of blood thats lost

While a high dietary intake of the vitamin rarely causes high vitamin B12, excess usually results from supplementation or injections