is it normal to feel tired after a b12 injection How Can Vitamin Shots Help Me Refreshed Feeling off, tired, or struggling

Qualitative and Quantitative Validation of the FACIT-Fatigue Scale in Iron Deficiency Anemia. Health and Quality of Life Outcomes 13 (2015): 60

The results were staggering

Description Vitamin B12 20 mL For research use only

Resistance training is non-negotiable

For more extensive revisions, initial recovery typically takes one to two weeks, while complete healing and scar maturation can take several months

For people with cobalt allergy (which is more common among people with nickel allergy) who are also at risk of vitamin B12 deficiency, the "general advice seems to be 'take just enough but not too much,' which isn't too different from dosing advice for all vitamins and drugs" (via ACSH)