b12 injections given where How to Give Yourself a Injection B12 Shots in Friso, Sherman,

It also helps with mood elevation and promotes anti-aging

A double-blind, placebo-controlled trial in 95 patients with irritable bowel syndrome or inflammatory bowel disease and normal B12 levels found no significant improvements in fatigue, although B12 levels increased in the B12 group who received 1000 g per day per os (p.o.) for 8 weeks (form not reported)

In reality, the amount is minimal and biologically insignificant for healthy individuals

Choline : Promotes health of nerve cells, cuts muscle recovery time, helps convert fat to energy

If you arent truly deficient in vitamin B12, an injection (or oral supplement) is a nice to have, not a must-have .