Gastrointestinal effects are the most common and include nausea, vomiting, diarrhea, and constipation
Proper levels of B12 are critical for maintaining a robust immune system and reducing the risk of health complications
Some factors make you more likely to have a vitamin B12 deficiency, such as aging, surgery to remove part of the stomach, Crohn's disease, celiac disease, and a vegan diet
Methylcobalamin is the active and naturally occurring form of Vitamin B12, which is critical for the healthy function of the brain, nerves, and for the formation of red blood cells
Despite its importance, B12 deficiency is remarkably common particularly among vegetarians, older adults, individuals with digestive conditions, and anyone whose body has difficulty absorbing this vitamin from food or oral supplements