weekly b12 injection Cyanocobalamin (B12) 1000 mcg/mL, Multiple Dose Vial 30 mL Vitamin B12 - Energy &

This dietary pattern change may contribute to declining b12 levels as much as or more than any absorption issue

Effects of homocysteine-lowering with folic acid plus vitamin B12 vs placebo on mortality and major morbidity in myocardial infarction survivors: a randomized trial

B12 IM injections are often recommended for individuals with conditions that affect B12 absorption, such as pernicious anemia, atrophic gastritis, or those who have undergone certain gastrointestinal surgeries

Clinical deficiency with clearly low blood levels affects a smaller percentage, but a much larger group falls into a gray zone where levels are low enough to cause subtle symptoms without triggering an obvious diagnosis

& Taschler, U