The purity figure printed on each batch's Certificate of Analysis is the actual value recorded in the laboratory for that batch, not a generic marketing claim
Despite its importance, vitamin B12 deficiency is relatively common, especially among older adults, vegetarians, and those with certain medical conditions that affect nutrient absorption
B12 shots use intramuscular injection, depositing vitamin B12 directly into muscle tissue, typically in the upper arm or thigh
Women who are severely deficient in vitamin B12 during pregnancy have an increased chance of having a baby with defects or having the baby miscarried
Once a person receives a dose of vitamin B12 injection, it is distributed throughout the body to start performing its duties
Vitamin B12 injections (hydroxocobalamin in the UK) are prescribed for documented deficiency states such as pernicious anaemia and malabsorption disorders