b12 injection how often to take Vitamin B12: Frequently Should I Get It? B12 Shots at Home: How,

Heads up: Sometimes the plunger pushes itself in as soon as the needle enters the vial

One study found that even up to 2,000 micrograms a day of methylcobalamin wasnt enough to correct vitamin B12 deficiency in one of three vegans tested

Vitamin B12 is vital for the brain and blood cells

Researchers believe that tesofensine may help treat obese and overweight patients because it boosts the levels of dopamine in the brain

Learn where to self-administer a B12 shot and how to do it painlessly This article was medically reviewed by Shari Forschen, NP, MA and by wikiHow staff writer, Amber Crain

If you recognise these symptoms, proper B12 deficiency treatment starts with an accurate diagnosis from a healthcare professional