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Medical and Pharmacy Editor:

Brand Name: Selepen

Generic Name: selenium

Drug Class: Trace Elements/Metals

What Is Selenium and How Does It Work?

Selenium is a trace element that is naturally present in many foods, added to others, and available as a dietary supplement. Selenium is nutritionally essential for humans, play a critical role in reproduction, thyroid hormone, metabolism, DNA synthesis and protection from oxidative damage and infection.

Selenium is available under the following different brand names: Selepen.

Dosages of Selenium Should Be Given As Follows:


  • 50 mcg
  • 100 mcg
  • 125 mcg
  • 200 mcg

Tablets, Extended Release

  • 200 mcg


  • 200 mcg

Injectable Solution

  • 40 mcg/mL

Dosage Considerations

Recommended Daily Allowance - Adults

  • Male or female: 55 mcg/day
  • Pregnancy: 60 mcg/day
  • Lactating: 70 mcg/day

Recommended Daily Allowance - Adults

  • 100-200 mcg/day orally preferably with meals; may take 50 mcg orally once a day or every 6 hours.

Recommended Daily Allowance - Pediatric

  • Under 6 months: 15 mcg/day
  • 6-12 months: 20 mcg/day
  • 1-3 years: 20 mcg/day
  • 4-8 years: 30 mcg/day
  • 8-13 years: 40 mcg/day
  • 13-18 years: 55 mcg/day
Medically Reviewed by a Doctor on 3/8/2017

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