stomach cramps after b12 injection Managing Post-Injection Nausea and Discomfort Best Vitamin B12 Injection Site:

pylori infection, and eradication of the bacteria has been shown to significantly improve vitamin B 12 serum concentrations (9)

A deficiency can also lead to anemia, which means your body does not have enough red blood cells to perform normally

Some improvements in insulin sensitivity and inflammatory markers can begin emerging within 4 to 8 weeks of treatment Leptin normalization, however, follows actual fat mass reduction rather than drug exposure directly, meaning those benefits likely take months of sustained treatment

In these situations, patients may have high B12 on blood work but still exhibit neurological symptoms of deficiency (tingling, numbness, cognitive changes)

Picard et al