L-Arginine and L-Arginine for Erectile function
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
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.
Evidence brief
L-Arginine for Erectile function
Evidence grade C — Higher doses / combined
Grade C1 graded outcomerevised 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.
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.
| Outcome | L-Arginine | L-Arginine for Erectile function |
|---|---|---|
| Erectile function | Evidence grade CSmall effectmixedHigher doses / combined | Evidence grade CSmall effectmixedHigher doses / combined |
Graded only in L-Arginine
- Blood pressure Small effectEvidence grade C
- Exercise pump / performance Trivial effectEvidence grade D
Graded only in L-Arginine for Erectile function
None — every outcome it grades is graded in both.
Conditions
Only in L-Arginine
- Erectile dysfunction May improveEvidence grade C
Only in L-Arginine for Erectile function
None.
What each entry says about the other
- L-Arginine for Erectile function’s entry · Goes with: Read the full L-Arginine monograph
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.