L-Lysine for Recurrent cold sores and L-Lysine
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.
Evidence brief
L-Lysine for Recurrent cold sores
Evidence grade C — Prevention
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.
Compound or practice
L-Lysine
An essential amino acid with modest evidence for reducing cold-sore (herpes) recurrences.
Grade C1 graded outcomerevised 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 L-Lysine for Recurrent cold sores
- Recurrent cold sores Unclear effectEvidence grade C
Graded only in L-Lysine
- Cold-sore (HSV) recurrence Small effectEvidence grade C
Conditions
Only in L-Lysine for Recurrent cold sores
None.
Only in L-Lysine
- Recurrent cold sores May improveEvidence grade C
What each entry says about the other
- L-Lysine for Recurrent cold sores’s entry · Goes with: Read the full L-Lysine 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.