Which peptides have human evidence for motivation, drive or anhedonia?

5 compounds in this library are used for motivation and drive. Ranked by weight of human evidence, Davunetide scores highest at 51 of 100. 4 of the 5 rest on preliminary human evidence or none at all. This is a statement about evidence, not a recommendation.

Peptides for motivation and drive, ranked by evidence

People arrive at this looking for the thing that makes starting easier. It is the least well-served question in the library: the compounds marketed for it are mostly nootropics registered in one country, and the specific complaint — no drive, nothing feels worth doing — is almost never what the studies measured.

Compounds people use for this: 5
Approved for any indication: 0
Preliminary evidence or none: 4
Best-evidenced: Davunetide

A rank is a statement about evidence, not advice. Position here is calculated from the published evidence rating, regulatory standing and documented risks on each monograph. It says nothing about whether a compound is appropriate for you, and several of the best-evidenced entries are prescription medicines that carry serious warnings. Nothing on this page is a recommendation, and no page on this site states a dose.

Losing motivation is a symptom, and depression, thyroid disease, sleep apnoea and low iron all produce it. Those are diagnosable and treatable, and none of them is improved by a research peptide.

Ranked by the same evidence score used across the site, restricted to the compounds people actually take for this. A compound near the bottom is not necessarily useless — it is untested, which is a different and more common situation. Every row links to a monograph that says exactly what was studied and in whom.

#	Compound	Status	Evidenceout of 100	Riskout of 100	Gaprisk − evidence	Why it sits here
1	Davunetide: 8 amino acids (from the sequence record) · Cognitive & Neurological · evidence 3 of 5 Davunetide Cognitive & Neurological · NAP	In Clinical Trials	51	43	-8	In Clinical Trials. 1 benefit claim on strong human evidence. 2 serious or common risks.
2	Noopept: 2 amino acids (from the sequence record) · Cognitive & Neurological · evidence 2 of 5 Noopept Cognitive & Neurological · N-phenylacetyl-L-prolylglycine ethyl ester	Limited Approval	37	56	+19	Limited Approval. No benefit claim on strong human evidence. 2 serious or common risks.
2	Selank: 7 amino acids (from the sequence record) · Cognitive & Neurological · evidence 2 of 5 Selank Cognitive & Neurological · TP-7	Limited Approval	37	61	+24	Limited Approval. No benefit claim on strong human evidence. 3 serious or common risks.
2	Semax: 7 amino acids (from the sequence record) · Cognitive & Neurological · evidence 2 of 5 Semax Cognitive & Neurological · ACTH (4-10) Pro-Gly-Pro	Limited Approval	37	61	+24	Limited Approval. No benefit claim on strong human evidence. 3 serious or common risks.
5	Dihexa: 3 amino acids (from the sequence record), fatty-acid chain · Cognitive & Neurological · evidence 1 of 5 Dihexa Cognitive & Neurological · N-hexanoic-Tyr-Ile-(6) aminohexanoic amide	Research Use Only	15	89	+74	Research Use Only. No benefit claim on strong human evidence. 5 serious or common risks.

How this ranking is built

Evidence rating	15 points each, up to 75 The published 1-5 rating, multiplied by fifteen. This is most of the score, because it is the thing the whole site is built to assess.
Regulatory standing	FDA Approved 12 · Limited Approval 7 · In Clinical Trials 4 · Cosmetic Ingredient 2 Approval by a major regulator means an agency has reviewed the trial data and agreed. Approval elsewhere, or an active registered trial, counts for less. A research-use-only label counts for nothing.
Well-supported benefit claims	2 points each, up to 10 Two points for each benefit on the monograph carried by strong human evidence, up to five of them. A long list of weakly-supported claims adds nothing here.
Hard clinical endpoints	up to 3 Three points where a well-supported claim rests on something that happened to a patient — a death, a fracture, a heart attack, a transplant, a remission — rather than on a number that moved in a blood test. This is the site's published tie-breaker between two drugs that both have strong trials.

Membership is computed from each monograph's category, tags and benefit claims rather than chosen by hand, so a compound added to the library appears here on its own. The score is the site-wide evidence score, not a score for this goal specifically — a compound approved for something else does not get credit here for that approval beyond its regulatory standing. Read the evidence scale for what the tiers mean.

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See also the whole library ranked by evidence and by documented risk.