who can teach you to take b12 injections π HOW SELF-INJECT AT HOME with Dr. Tyler Rogers π, β , If youβve been prescribed vitamin B12 shots or exploring at-home wellness, this step-by-step guide will walk through how to do your own B12 Shots at Home: How,
Description
Dosage and Frequency: Once a week Taken on the same day each week, any time of day, with or without food

As you can see below and at 3:20 in my video , it turns out that the level of B12 on our skin is proportional to the level in our blood, so, after a B12 injection, the bacteria on our skin have to make less of their own B12

Biochim Biophys Acta (BBA) - Bioenergetics

Metabolic effects of metformin on gut bacteria to increase their vitamin B12 uptake, leading to increasing competition for available dietary vitamin B12 and ultimately to human vitamin B12 deficiency