best place to self inject b12 Vitamin Injection Sites: All You Need Know Best Vitamin B12 Injection Sites
Description
Parenteral and intranasal cyanocobalamin, vitamin B12 are classified as pregnancy category C

doi:10.1016/j.bmcl.2018.07.009

This helps nerves send signals well

Mayo Clinic Proceedings: Innovations, Quality & Outcomes

Its also important to note that there are various muscle spasms
These are not off-the-shelf supplements
