Selenium (Available as generic selenium supplements, Selenomethionine, Sodium selenite)

Other Medications

US FDA Approved Oral 2 Clinical Trials
Glutathione peroxidases thioredoxin reductases selenoproteins

Description

Selenium is an essential trace mineral that functions as a micronutrient supplement used in colorectal cancer prevention research. It is classified as a dietary supplement and antioxidant compound that has been studied for its potential role in preventing the development of adenomatous colorectal polyps, which are precancerous lesions that can progress to colorectal cancer. Selenium supplementation has been evaluated in large-scale prevention trials focusing on reducing polyp recurrence in patients with a history of colorectal adenomas.

Mechanism of Action

Selenium acts as a cofactor for selenoproteins, including glutathione peroxidases and thioredoxin reductases, which provide antioxidant protection against oxidative stress and DNA damage. These selenoenzymes help maintain cellular redox balance and may reduce inflammation in the colonic epithelium. The antioxidant properties of selenium may help prevent the oxidative damage that contributes to the initiation and progression of colorectal carcinogenesis.

Molecular Targets

Side Effects

Garlic breath odor Metallic taste Nail changes Hair loss Fatigue Nausea Skin rash Peripheral neuropathy

Not all side effects are listed. Side effects vary by individual. Always consult your oncologist.

Clinical Trials

NCT00706121 Phase 3
Archived
S0000D: Effect of Vitamin E and/or Selenium on Colorectal Polyps in Men Enrolled on SELECT Trial SWOG-S0000
United States
NCT00078897 Phase 3
Archived
Selenium for Prevention of Adenomatous Colorectal Polyps
United States