bpc 157 human study Frontiers BPC-157: The Secret Weapon for
Description
If your B12 levels were consistently low, it may take several months to restore your bodys levels

Oral vitamin B 12 versus intramuscular vitamin B 12 for vitamin B 12 deficiency

A deficiency can also result from not getting enough B12 in what you eat due to various food restrictions

If you give a shot in the same place every day or even every week, scar tissue can build up
