why do i feel tired after b12 injection am still injections Are Vitamin Shots Right for You? Feeling worse after B12 why do i feel tired

Inadequate dose Mistake : Using 100-150mcg doses (too low)

Commercial oral supplements likely deliver negligible active peptide despite marketing claims

Olivero MD, MSPH, CPH, EOH, CWW B12 Shot Walk-Ins Welcome

There isnt robust clinical literature to support a specific tapering schedule, but any research and expert opinion that is out there seems to support a 10-25% reduction every 2-4 weeks

Some people receive injections weekly, while others may need them less frequently

It is also used to manage vitamin B12 deficiencies resulting from specific surgeries, diseases of the stomach or gut, and any other genetic disorders affecting vitamin B12 metabolism