vitamin b12 injection is for what Compounded Cyanocobalamin (Vitamin B12) Vitamin B12 for Injection Cyanocobalamin
Description
Supplied as a lyophilised powder

After you insert, pull back slightly on the plunger of the syringe

doi: 10.1111/bph.14779 [DOI] [PMC free article] [PubMed] [Google Scholar] 58

My advise is dont hesitate, Vitastir is the real deal
