Supplements for energy & fatigue and L-Ornithine
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 energy & fatigue
7 compounds relevant to energy & fatigue, ranked by overall evidence grade.
Grade A7 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
L-Ornithine
A urea-cycle amino acid with small data for exercise fatigue and stress-related sleep.
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.
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 energy & fatigue
- Iron Unclear effectEvidence grade A
- Rhodiola Rosea Unclear effectEvidence grade B
- Panax Ginseng Unclear effectEvidence grade C
- L-Ornithine Unclear effectEvidence grade C
- Sulbutiamine Unclear effectEvidence grade C
- Eleuthero (Siberian Ginseng) Unclear effectEvidence grade C
- Shilajit Unclear effectEvidence grade C
Graded only in L-Ornithine
- Exercise fatigue Small effectEvidence grade C
- Stress / sleep markers Small effectEvidence grade C
What each entry says about the other
- Supplements for energy & fatigue’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.