Erectile function: what the evidence supports and L-Arginine
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.
Outcome map
Erectile function: what the evidence supports
2 graded interventions for erectile function, ranked by strength of evidence.
Grade B2 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-Arginine
The direct nitric-oxide precursor that mostly loses to citrulline because the gut destroys it first.
Grade C3 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 Erectile function: what the evidence supports
- Panax Ginseng Moderate effectEvidence grade B
- L-Arginine Small effectEvidence grade C
Graded only in L-Arginine
- Blood pressure Small effectEvidence grade C
- Erectile function Small effectEvidence grade C
- Exercise pump / performance Trivial effectEvidence grade D
Conditions
Only in Erectile function: what the evidence supports
None.
Only in L-Arginine
- Erectile dysfunction May improveEvidence grade C
What each entry says about the other
- Erectile function: what the evidence supports’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.