You might notice subtle positives such as improved concentration, better appetite, or more restful sleep, but responses vary
This is usually followed by injections every three or four days for the next two to three weeks
[1] Because intrinsic-factor-dependent uptake in the distal ileum can be absent in conditions such as autoimmune gastritis, pancreatic insufficiency, or bariatric surgery, the intramuscular or subcutaneous route bypasses gastrointestinal barriers and reliably restores serum concentrations
Heres a summary of the advantages of B12 injections in disease prevention and the side effects to be mindful of: Potential Advantages When considering vitamin B12 injections, you should be aware of the potential advantages they offer
If you have low levels of vitamin B12, you may experience sensations such as numbness or tingling in the hands, legs, or feet, difficulty walking caused by problems with balance, or having an inflamed, swollen tongue