what is in the injectable b12 Cyanocobalamin (b12) Injection 2,000 mcg/mL 30mL Conquer Pharma Intrav – My Store Cyano is a form of vitamin B12 that is man B12 Injection | The Modern
Description
Unlike oral supplements that have to steer your entire digestive system (and might get lost along the way), these injections deliver vitamin B12 directly where your body needs it most

Place the vial upright in the refrigerator at 2-8 degrees Celsius (35.6 to 46.4 degrees Fahrenheit)

See cited studies for primary sources
However, it seems most common among individuals aged 15 to 40
