US$ 21.54
b12 injection shelf life Cyanocobalamin Vitamin 1000 mcg — Mountainside Medical Oral vs. Intramuscular Vitamin B12
Description
What side effects are possible

Without intrinsic factor, no matter how B12-rich ones diet might be, the body cant utilise the nutrient, and a deficiency ensues

Hesitating or inserting very slowly increases discomfort

You may be suffering from vitamin B12 deficiency