why do b12 injections sting Hurt? Painful Shots Tips · PA Relief What Is Botox and How

Without sufficient B12, this sheath can weaken, which may explain symptoms such as tingling, numbness, memory issues, or brain fog. From an energy standpoint, B12 supports the methylation cycle , a chemical pathway involved in energy metabolism and detoxification

Abels, Improved distribution analysis of cobalamins and cobalamin analogues in human plasma in which the use of thiol-blocking agents is a prerequisite, Clinica Chimica Acta, Volume 131, Issue 3, 15 July 1983, Pages 211-224, ISSN 0009-8981 Thakkar, K., & Billa, G

This makes B12 injections much more absorbable than an oral supplement

As such they attract molecules containing a Src-homolgy 2 (SH2) domain (several docking sites for phosphorylated tyrosines)

A very few naturopaths or functional medicine doctors may be using methylcobalamin or hydroxocobalamin in an IV or shot scenario