B12 shots are generally considered safe and may be recommended if you have a lab-confirmed deficiency
As injections are more easily and quickly absorbed by the body, many people use B12 injections as opposed to oral supplements
For a disulfide-containing synthetic peptide, a stronger analytical package may require orthogonal identity and purity methods, evidence supporting disulfide configuration, impurity profiling, assay or net peptide content, water and counterion determination, residual-solvent testing, and stability-indicating methods
Cureus, 2021 May Danielius Serapinas, Evelina Boreikaite, Agne Bartkeviciute, Rita Bandzeviciene, Mindaugas Silkunas, Daiva Bartkeviciene
Frequently Asked Questions How often do I need vitamin B12 injections for pernicious anaemia