Selenium and Supplements for antioxidant support

Each entry’s own grades, side by side. A grade says how strong the evidence is for one outcome — it does not rank one entry over the other.

Compound or practice

Selenium

A trace mineral with a narrow safe window — correct a deficiency, don't chase antioxidant megadoses.

Grade C2 graded outcomesrevised Jul 10, 2026

A structured monograph in Prometheus's bundled library. Its grades are the monograph's own reading of the evidence, not a peer-reviewed review.

Goal guide

Supplements for antioxidant support

21 compounds relevant to antioxidant support, ranked by overall evidence grade.

Grade A21 graded outcomesrevised Jul 10, 2026

Assembled by the app from other entries in this library. It adds no evidence of its own — follow the links to the entries it draws on.

Swap the two

Graded in both

Outcomes are matched by name. Two entries can describe the same outcome in different words, so one listed further down may still be graded in the other.

No outcome has the same name in both entries. They may still overlap under different wording — read the two lists below.

Graded only in Selenium

  • Prostate cancer prevention Trivial effectEvidence grade D
  • Autoimmune thyroiditis antibodies Small effectEvidence grade C

Graded only in Supplements for antioxidant support

  • Vitamin C Unclear effectEvidence grade A
  • N-Acetylcysteine (NAC) Unclear effectEvidence grade B
  • Alpha-Lipoic Acid Unclear effectEvidence grade B
  • Lutein & Zeaxanthin Unclear effectEvidence grade B
  • Vitamin E Unclear effectEvidence grade C
  • Selenium Unclear effectEvidence grade C
  • Taurine Unclear effectEvidence grade C
  • Milk Thistle (Silymarin) Unclear effectEvidence grade C
  • Green Tea Extract (EGCG) Unclear effectEvidence grade C
  • Sulforaphane Unclear effectEvidence grade C
  • Glutathione Unclear effectEvidence grade C
  • Olive Leaf Extract Unclear effectEvidence grade C
  • Astaxanthin Unclear effectEvidence grade C
  • Lycopene Unclear effectEvidence grade C
  • Pycnogenol (Pine Bark) Unclear effectEvidence grade C
  • Grape Seed Extract Unclear effectEvidence grade C
  • Moringa Unclear effectEvidence grade C
  • Ergothioneine Unclear effectEvidence grade C
  • Beta-Carotene Unclear effectEvidence grade C
  • Bilberry Unclear effectEvidence grade C
  • Chaga Unclear effectEvidence grade D

What each entry says about the other

  • Supplements for antioxidant support’s entry · Goes with: Grade C

Both columns are read from the entries as they stand in this library. A comparison is not advice to take either one, and it is no substitute for a clinician who knows the person.