does b12 injection make you tired had but still Chronic Fatigue: Can Shots Tired? · PA Relief Need a quick energy boost? – does a b12 injection make

Inject during the fasting window, not during the eating window

Start by cleaning the rubber stopper on top of the B12 vial with a fresh alcohol swab

I was taking this as instructed and working out at the same time and still no difference

So the practical takeaway is not oral is better or SC is better. It is: pick one route, follow the documented per-dose figure for the vial you have, and keep the route constant so that whatever you observe is not confounded by a mid-stream route change

Journal of Medicinal Chemistry , 61(15), 64156425

Not painful Once the needle is through the skin, there are few nerve sensors, making the injection almost painless