toxic reactions with b12 injections CYANOCOBALAMIN INJECTION, USP 30000 mcg/30 mL (1000 mcg/mL) 30 mL VIAL Too Much Vitamin B12: Risks,
Description
First off the staff is amazing

For long-term stability, keep lyophilized (powder) peptides refrigerated at 28C
American Hospital Formulary Service - Drug Information 2000.Bethesda, MD: American Society of Health-System Pharmacists, Inc

This burning typically worsens after meals, when lying down, or when bending over