Supplements for antioxidant support and Vitamin C
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.
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.
Compound or practice
Vitamin C
An essential antioxidant and enzyme cofactor — cures scurvy, modestly shortens colds, and triples plant-iron absorption.
Grade A4 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.
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 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
Graded only in Vitamin C
- Scurvy / deficiency Large effectEvidence grade A
- Non-heme iron absorption Moderate effectEvidence grade A
- Cold duration Small effectEvidence grade B
- Cancer / CVD prevention Trivial effectEvidence grade D
What each entry says about the other
- Supplements for antioxidant support’s entry · Goes with: Grade A
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.