Glycine and Glycine for Next-day alertness
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
Glycine
A cheap amino acid that lowers core temperature for easier sleep onset and supports collagen and glutathione.
Grade B2 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
Glycine for Next-day alertness
Evidence grade C — After better sleep
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 | Glycine | Glycine for Next-day alertness |
|---|---|---|
| Next-day alertness | Evidence grade CSmall effectmixedAfter better sleep | Evidence grade CSmall effectmixedAfter better sleep |
Graded only in Glycine
- Sleep onset / quality Small effectEvidence grade B
Graded only in Glycine for Next-day alertness
None — every outcome it grades is graded in both.
What each entry says about the other
- Glycine for Next-day alertness’s entry · Goes with: Read the full Glycine 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.