Medically reviewed by Sohaib Imtiaz, MD Vitamin B12, also known as cobalamin, is an important nutrient in food, especially ...
Medically reviewed by Jamie Johnson, RDN Taking vitamins is usually good for your health, but is it possible to take too much ...
A vitamin B12 blood test is one way to know if you’re B12 deficient. Some people opt for a urine test instead. Learn when ...