Selenium - Uses, Warnings, Side Effects, Precautions, Overdose, Brands


Selenium is an essential trace element found in the soil. It is most likely to be found in whole grains and animal produce, rather than fresh fruit and vegetables. This mineral plays a key role in cognitive function, healthy immune system and fertility. It also acts as a defensive mechanism for oxidative stress and infection and regulates thyroid hormone metabolism and DNA synthesis. Thus, one biological role of selenium acts as a carrier of vitamin E which may function in absorption, retention, prevention of destruction d-α-tocopherol, thereby enhancing its biological activity in the blood and perhaps in cells throughout the body.


Use this medication precisely as recommended by your physician. Follow the prescription of your doctor carefully.

The medication dose given by your physician is based on your health conditions, other medications or food supplements taken, and your reaction to the treatment. To diminish risks for adverse effects, do not increase your dosage, thus take it regularly, or take it as instructed by your physician. Adverse events may still happen even at usual prescription dosages.

If your physician requests you to use this drug consistently, take it regularly to get the most benefits from it. To make you remember it better, take it at a fixed time every day.

Your doctor may need to modify your dosages to ease your symptoms or if you develop adverse reactions.

If you have any inquiries with regards to information, ask your physician or pharmacist.

Selenium is used in the following conditions:


  • Selenium deficiency


This medicine may be recommended for different uses. Approach your physician or pharmacist for more information.

There are no known warnings for Selenium.

Selenium may have the following side effects:



Keep in mind that your physician has recommended this drug since he or she has known that the advantage to you is more significant than the risk of adverse reactions. Many individuals utilizing this medicine don’t have serious side effects.

A severe allergy to this medication is uncommon. In any case, seek emergency medical help if you see any manifestations of a serious allergic response, including a rash, tingling or swelling particularly of the face or tongue or throat, dizziness or difficulty in breathing.

This is not a complete list of side effects. If you see other effects not recorded above, contact your physician or pharmacist.

There are no known precautions for Selenium.




Selenium may interact with the following medicines:


  • Antacids
  • Chemotherapydrugs
  • Corticosteroids
  • Niacin
  • Cholesterol-lowering statin drugs
  • Birth control pills


Inform your physician about the drugs you take including over-the-counter medications, prescribed drugs, supplements and vitamins.

This is not a complete list of drug interactions. Approach your physician or pharmacist for more details.

The effects of certain medications can change if you consume different medications or herbal products simultaneously. This can build your risk for side effects or may cause your drugs not to work effectively. These interactions are possible, yet don’t generally happen. Your physician or pharmacist can prevent or oversee interactions by changing how you utilize your prescriptions or by close checking.

While utilizing this drug, don’t start, stop, or change the dose of other medicines you are using without your physician’s advice.

If you think you have used Selenium more than the usual dosage, please seek medical help immediately.


Symptoms of overdose may include the following:


  • Nail or hair brittleness
  • Hair or nail loss
  • Diarrhea
  • Metallic taste
  • Garlic-like breath odor
  • Dermatitis
  • Irritability
  • Peripheral neuropathy


Available Brands:


  • Selenium TR
  • Selepen
  • Sele-Pak

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