how soon to check vitamin b12 level after injection when B12 Injections — Anupa Wellness B12 Shots Dosage for Adults:

Super B: Combines B1, B2, B3, B5, and B6 for comprehensive B-vitamin replenishment

Bibcode:2009Natur.460..814F

The following groups of people are at a greater risk of developing a vitamin B12 deficiency: Vegans or vegetarians People 75+ years Having a digestive system disorder like Crohns or celiac disease Drinking excessive amounts of alcohol Having Sjgrens syndrome Taking certain medications like oral birth control or metformin Common symptoms of a vitamin deficiency include fatigue, numbness, poor balance, memory loss, and breathlessness

To make it clearer, heres a quick summary of the different ways you can check your B12 levels