b12 injections in commack Cyanocobalamin Injection, 1000 mcg/mL 1mL Vial Vitamin B12 Injection Sites: All
Description
Subcutaneous: Whats the Difference

1.4 mg (pregnant and lactating women) | Sensitive to heat, oxygen, humidity, and light, and very sensitive to alkaline pH | Essential for metabolism of fats and carbohydrates, energy metabolism for the nervous system and muscles* Riboflavin (Vitamin B2) | 1.3 mg

Freezing can degrade the formulation so do not freeze it
Injectable medicines must stay sterile, which is part of why they are kept in controlled conditions and never decanted or topped up

After all, there is a lot of cell and DNA replication happening when you grow a human
