can b12 injections make you feel unwell How Quickly Does a Shot Work? Benefits & What to Expect Vitamin B12 shots: Uses, benefits,
Description
2011 Jul;94(1):359S-365S
Here are some key details to know if you have been prescribed B12 injection therapy

Gradual dose reduction over 8-12 weeks may help transition to weight maintenance without medication
Your body cannot make vitamin B12 on its own, so it must come from food or supplementation

PMID 28660890
