These brand-name medications have undergone rigorous testing in clinical trials to review their safety, efficacy, and purity
Because of the increased risk of food-bound vitamin B 12 malabsorption in older adults, the FNB recommended that adults over 50 years of age get most of the RDA from fortified food or vitamin B 12 -containing supplements (21)
Vaughan, M., Berger, J
You are on other medications, supplements or following any complementary or integrative health approaches
Serum B12 reference ranges vary between laboratories, but generally, levels below 148 pmol/L are considered deficient, whilst levels between 148258 pmol/L are regarded as borderline and may warrant further investigation or a trial of treatment, particularly if symptoms are present
Your GP should at least consider ongoing B12 deficency (because of under treatment) and rule out thyroid issues