This is Epogen, and it will help your body make more red blood cells. Red blood cells are needed to carry oxygen in the body.
This is ferrous sulfate, and it is an iron supplement. You use it when your body does not have enough iron.
This is Procrit, and it will help your body make more red blood cells. Procrit is given as an injection under the skin.
This is cyanocobalamin, which is more commonly known as Vitamin B12. There are 1,000 micrograms per 1 milliliter.