what happens if you don t get your b12 injection Feeling worse after Injection: Answering concerns Benefits of Vitamin B12 Injections:

2002;18(2):132135 [DOI] [PubMed] [Google Scholar] 49

If you have had weight loss surgery and are experiencing fatigue or neurological symptoms, B12 testing and consultation with a qualified provider should be a priority

Am J Med Sci

Heres how they differ from other approaches : Oral supplements : Lower bioavailability than injections, but useful for maintenance

They should also be instructed about signs and symptoms that warrant dose adjustment or medical evaluation, including severe gastrointestinal side effects or other unusual symptoms that may indicate adverse reactions, as determined relevant by the prescribing clinician

Some patients use occasional support while others follow a more structured plan