As a transition metal, iron has a dual personality. Iron is an essential nutrient -- good -- or it can be a dangerous toxin -- bad. Intravenous iron, or IVI, is recommended when someone has iron deficiency anemia and cannot get enough iron from her diet or iron supplements.

Carpal tunnel syndrome can be a painful condition caused by compression of the median nerve inside the carpal tunnel. Compression occurs as a result of swollen tissue pressing on the nerve.

If you take a pregnancy test, most likely the kit you bought tests for the presence of human chorionic gonadotropin hormones in your urine. This hormone, HCG, only occurs in your body under normal circumstances when you become pregnant.

Kenalog for injection comes in two forms, one as triamcinolone acetonide, which is used for intra-articular (into the joint) injection, and the other as triamcinolone diacetate which is given as an intramuscular injection. Kenalog is a synthetic corticosteroid used as an anti-inflammatory and immunosuppressant.

Erythropoietin injections (Procrit, Epogen) are used to treat anemia in patients with chronic kidney disease, cancer patients receiving chemotherapy and HIV patients taking certain medications.

Cortisone is a prescribed steroid medication that can be injected into the shoulder to relieve pain and inflammation. Cortisone reduces chemical signals the body’s immune system releases that cause pain and inflammation.

Glutathione is an antioxidant formed from the amino acid cysteine, glutamate and glycine. Virtually all your cells have glutathione, but this antioxidant is most highly concentrated in your liver, pancreas, spleen and eyes. Your glutathione levels dwindle as you age.

Decadron or dexamethasone is a medication in a classification of drugs known as corticosteriods. According to Drugs.

Your body uses vitamin B-12 to synthesize DNA and to keep your nerves and blood cells healthy. If you have a vitamin B-12 deficiency, your doctor may prescribe a supplement because deficiency in this vitamin can cause serious health problems such as anemia.