are all b12 injections the same Should You Take Natural vs. Synthetic B12? Are Vitamin B12 Shots Right

What the research tells us A recent meta-analysis of research (which included 19 individual studies for a total of 3211 cases) found that women with preeclampsia had significantly lower serum vitamin B12 levels compared with pregnant women without preeclampsia (Mardali 2020)

The FDA label recommends caution in patients with marked first-degree AV block (without any clear definition of what this is)

To ensure maximum stability and safety, the medicine must be stored in a cool, dry place away from direct sunlight

Second, they indicate minimal risk of allergic or hypersensitivity reactions, which can occur when immune responses develop against therapeutic peptides