how quickly does vitamin b12 injection work Long It Take for Injections To Work? How Quickly Does B12 Shot
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[DOI] [PMC free article] [PubMed] [Google Scholar] 280.Gonzlez-Rodrguez, P

The injection runs about 5 to 10 minutes
If your B12 deficiency is severe, it could take 4-6 weeks of injections before you really start to turn the corner and feel like your old self again

I have a fear of needles, but the alternative isn't very pleasant

Skin Concern: Signs of skin aging, hair loss, and certain scalp concerns

Sarvari, A
