b12 injection vs oral vitamin versus intramuscular vitamin B12 for vitamin B12 deficiency Vitamin B12 Oral vs Injection​

We believe that the successful performance of these techniques lies in the details

Usually 24 to 36 months , depending on storage conditions and packaging

The 2024 NICE Guideline NG239 from the United Kingdoms National Institute for Health and Care Excellence similarly distinguishes between patients who can be managed with oral therapy and those who require intramuscular treatment

In some cases, further tests may be required to identify the underlying cause, such as the Schilling test (now rare) or the detection of antibodies against intrinsic factor or gastric parietal cells

For those who eat meat and dairy and do not have an underlying issue preventing B12 absorption, this should not be a problem