vitamin b12 injections vs oral vs. Supplements: Which Works Best? B12 Injection vs. Oral Supplements:

The neurology of folic acid deficiency

Researchers believe that low vitamin B12 levels lower homocysteine levels in your bloodstream

In the past 8 years, four meta-analyses, including 1626 RCTs each, have pooled the data from studies comparing prostaglandin E1 (PE1) with and without B12 and with or without additional alpha-lipoic acid

Sexton KA, Walker JR, Graff LA, et al

The NICE guidelines on obesity management do not include B12 supplementation as a therapeutic option for weight reduction in the absence of documented deficiency

11 Bone marrow suppression is common and potentially affects all cell lines, with megaloblastic anemia being most common