For example, one study found that after taking 1,000 mcg of oral vitamin B12, only about 1.3% (13 mcg) is absorbed into the bloodstream
Busy professionals seeking reliable supplementation without daily pill regimens, athletes wanting optimized energy production, and individuals committed to proactive wellness often prefer the convenience and reliability of periodic injections
Vegetarians and individuals over 50 face particularly elevated risk, as do people with digestive conditions affecting nutrient absorption
B12 Injections For Pernicious Anaemia B12 injections are especially helpful for patients with pernicious anemia, an autoimmune condition that prevents the stomach from absorbing B12
A review of individual studies found that people with lower serum vitamin B12 levels are at a higher risk for depression
Many plans cover B12 injections when documented deficiency exists or when conditions affecting absorption are present