Peptide Decoding
Reference / Evidence

How much human evidence there is, compound by compound

267 compounds. 42 are approved in the US for at least one use, 5 more were approved and are no longer sold there, and 17 are approved only outside it. Of the rest, 28 have reached phase 3 or later, 29 phase 2 and 6 phase 1. 140 have at least one registered human trial. 93 have a trial with posted results. 122 have no published clinical trial, including 43 with nothing indexed at all. Counted from Europe PMC and trial-registry indexing, last computed October 12, 2026.

Counted from Europe PMC indexing, not read by a person; human includes reviews and cell work, original studies exclude both. A human tag comes from the indexer's subject headings and can land on analytical, commentary or lab papers that mention people; clinical trial publications is the narrower count.

A
AdropinResearch only
Published trials only
12 clinical trial publications, no phased trial registered
48823218112901Records →
C
ChitomurResearch only
Published trials only
1 clinical trial publication, no phased trial registered
321100Records →
D
Decapeptide-12 (Lumixyl)Supplement or cosmetic
Published trials only
3 clinical trial publications, no phased trial registered
766300Records →
DSIP (Delta Sleep-Inducing Peptide)Research only
Published trials only
18 clinical trial publications, no phased trial registered
481103831800Records →
E
EpitalonResearch only
Published trials only
7 clinical trial publications, no phased trial registered
1725633700Records →
G
GDF-11Research only
Published trials only
5 clinical trial publications, no phased trial registered
8072161425203Records →
GHK (copper-free)Supplement or cosmetic
Published trials only
2 clinical trial publications, no phased trial registered
3238449230Records →
GHRP-2Research only
Published trials only
56 clinical trial publications, no phased trial registered
2471411155600Records →
GHRP-6Research only
Published trials only
30 clinical trial publications, no phased trial registered
7321631343000Records →
H
HexarelinResearch only
Published trials only
58 clinical trial publications, no phased trial registered
3301691385800Records →
HumaninResearch only
Published trials only
7 clinical trial publications, no phased trial registered
5902571567301Records →
I
IrisinResearch only
Published trials only
13 clinical trial publications, no phased trial registered
3,15133815213811Records →
K
KlothoResearch only
Published trials only
1 clinical trial publication, no phased trial registered
1185730100Records →
M
Matrixyl (Palmitoyl Pentapeptide-4)Supplement or cosmetic
Published trials only
3 clinical trial publications, no phased trial registered
562616300Records →
MGF (Mechano Growth Factor)Research only
Published trials only
13 clinical trial publications, no phased trial registered
3782388113106291Records →
MIF-1Research only
Published trials only
1 clinical trial publication, no phased trial registered
4769170111Records →
N
NAD+Clinical use
Published trials only
6 clinical trial publications, no phased trial registered
14970336131Records →
Nonapeptide-1 (Melanostatine-5)Supplement or cosmetic
Published trials only
1 clinical trial publication, no phased trial registered
2533100Records →
O
Orexin AResearch only
Published trials only
7 clinical trial publications, no phased trial registered
7,322282115779161Records →
P
Palmitoyl Tetrapeptide-7Supplement or cosmetic
Published trials only
1 clinical trial publication, no phased trial registered
1443110Records →
Palmitoyl Tripeptide-5Supplement or cosmetic
Published trials only
1 clinical trial publication, no phased trial registered
842120Records →
Palmitoyl Tripeptide-38Supplement or cosmetic
Published trials only
1 clinical trial publication, no phased trial registered
432100Records →
PinealonResearch only
Published trials only
1 clinical trial publication, no phased trial registered
1785100Records →
S
SigumirResearch only
Published trials only
1 clinical trial publication, no phased trial registered
332100Records →
SNAP-8 (Acetyl Octapeptide-3)Supplement or cosmetic
Published trials only
1 clinical trial publication, no phased trial registered
211100Records →
SpexinResearch only
Published trials only
7 clinical trial publications, no phased trial registered
27711787710Records →
SplenopentinResearch only
Published trials only
3 clinical trial publications, no phased trial registered
411811300Records →
T
ThymalinResearch only
Published trials only
12 clinical trial publications, no phased trial registered
2431561451200Records →
ThymulinResearch only
Published trials only
7 clinical trial publications, no phased trial registered
5811831177001Records →
Tripeptide-29Supplement or cosmetic
Published trials only
6 clinical trial publications, no phased trial registered
452212630Records →
TuftsinResearch only
Published trials only
3 clinical trial publications, no phased trial registered
647165100300Records →
V
VilonResearch only
Published trials only
3 clinical trial publications, no phased trial registered
642012300Records →
What each column means
Compound
The peptide's name. Click it to open its page.
Status
Where it stands with regulators, such as FDA-approved, investigational or research only. Same label as on its page.
Furthest stage
How far it has got toward approval, from ClinicalTrials.gov and approval records. Phase 1 tests safety in a small group. Phase 3 is the large trial that comes before approval.
Papers and trials indexed
Everything found that names this compound: published papers from Europe PMC plus studies registered on ClinicalTrials.gov.
Papers tagged human
Papers the database labels as involving people. This includes reviews and lab work on human cells, so it runs high.
Original human papers
The column to the left, minus reviews and lab work on human cells. The closest count to original research in people, though it can still include case reports and commentary.
Clinical trial publications
Published papers that report a clinical trial. The strictest count of human evidence on this page. Red means none.
Registered trials
Studies listed on ClinicalTrials.gov that test this compound. A listing alone does not mean the trial finished or reported anything.
Trials with posted results
Registered trials that have posted results on ClinicalTrials.gov. Red means none.
Retraction notices
Papers on this compound that were later retracted. Blank means none found.
Records
Opens the full list of papers and trials for this compound.

Furthest stage is the highest phase of any ClinicalTrials.gov trial in which the compound is the drug being tested, not a comparator. A combined phase 1/2 trial counts as phase 1 and phase 2/3 as phase 2, and withdrawn trials are left out because they never enrolled anyone. Reaching a phase says how far development got, not whether it worked: a phase 3 can fail, and the compound page marks any use that was tested and failed. Approval comes from each compound page and covers at least one use, not every use people take it for. Trials registered only in other registries, such as China's or the EU's, are not read yet.

See also: the research index, the regulatory tracker, and why most peptides have no human evidence.

Common questions

Which compound has the most registered trials?

Gonadorelin (GnRH) (1,164), EPO (Erythropoietin) (1,053) and Letrozole (905).

How many compounds have a trial with posted results?

93 of 267. Most results posted: Dulaglutide (Trulicity) (47), Exenatide (Byetta / Bydureon) (37), Oxytocin (37), Leuprolide (Lupron) (34) and Liraglutide (34).

What does "papers tagged human" mean here?

Counted from Europe PMC indexing, not read by a person; human includes reviews and cell work, original studies exclude both. A human tag comes from the indexer's subject headings and can land on analytical, commentary or lab papers that mention people; clinical trial publications is the narrower count.

Which peptides are approved outside the US but not in it?

Anamorelin (Japan), Beinaglutide (China), Cerebrolysin (45+ countries), Cerebroprotein Hydrolysate (China, India), Cortexin (Russia), Ecnoglutide, Imunofan (Russia), Mazdutide (China), Noopept (Omberacetam) (Russia), Phenibut (Russia), Retinalamin (Russia), Selank (Russia), Semax (Russia), Thymogen (Russia), Thymopentin (TP-5) (Italy, China), Thymosin Alpha-1 (30+ countries) and TUDCA (Italy, Turkey).

What does "furthest stage" mean?

Furthest stage is the highest phase of any ClinicalTrials.gov trial in which the compound is the drug being tested, not a comparator. A combined phase 1/2 trial counts as phase 1 and phase 2/3 as phase 2, and withdrawn trials are left out because they never enrolled anyone. Reaching a phase says how far development got, not whether it worked: a phase 3 can fail, and the compound page marks any use that was tested and failed. Approval comes from each compound page and covers at least one use, not every use people take it for. Trials registered only in other registries, such as China's or the EU's, are not read yet.