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
Abaloparatide (Tymlos)FDA-approved
Approved in the US
428263124362511Records →
AnastrozoleFDA-approved
Approved in the US
3,04142828912649431Records →
C
CabergolineFDA-approved
Approved in the US
2,5773551923783111Records →
Calcitonin (salmon)FDA-approved
Approved in the US
55,788200611122711Records →
Cetrorelix (Cetrotide)FDA-approved
Approved in the US
835378241109140121Records →
ClomipheneFDA-approved
Approved in the US
6,221385206492611415Records →
D
Degarelix (Firmagon)FDA-approved
Approved in the US
5743421776417028Records →
Desmopressin (DDAVP)FDA-approved
Approved in the US
6,2303721863312715Records →
Dulaglutide (Trulicity)FDA-approved
Approved in the US
1,46939823086142472Records →
E
EPO (Erythropoietin)FDA-approved
Approved in the US
7,303415256951,053251Records →
Exenatide (Byetta / Bydureon)FDA-approved
Approved in the US
5,57034117264378371Records →
G
Goserelin (Zoladex)FDA-approved
Approved in the US
1,91644530115541633Records →
H
HCG (Human Chorionic Gonadotropin)Clinical use
Approved in the US
17,8013552041041018Records →
HGH (Somatropin)Clinical use
Approved in the US
6,96942124659821171Records →
HMG (Menotropin)Clinical use
Approved in the US
1,7204553167417072Records →
L
L-Carnitine (Levocarnitine)FDA-approved
Approved in the US
8,8833051313231673Records →
LetrozoleFDA-approved
Approved in the US
6,131364228115905251Records →
Leuprolide (Lupron)FDA-approved
Approved in the US
3,7333672308052134Records →
Linaclotide (Linzess)FDA-approved
Approved in the US
5303301495360241Records →
LiraglutideFDA-approved
Approved in the US
6,21433717068514341Records →
M
Macimorelin (Macrilen)FDA-approved
Approved in the US
453218463Records →
Melanotan I (Afamelanotide)Research only
Approved in the US
as an implant only
14710449122312Records →
Methylene BlueSupplement or cosmetic
Approved in the US
into a vein only
4,39735720243343101Records →
O
Octreotide (Sandostatin)FDA-approved
Approved in the US
Failed when tested for one use
10,0793752124432725Records →
OrforglipronFDA-approved
Approved in the US
20313536205428Records →
OxytocinClinical use
Approved in the US
2,380403237156272371Records →
P
Pentosan Polysulfate (PPS)Clinical use
Approved in the US
79829219746192Records →
PramlintideFDA-approved
Approved in the US
5543541677764151Records →
PT-141 (Bremelanotide)FDA-approved
Approved in the US
1349038161041Records →
S
SemaglutideFDA-approved
Approved in the US
6,58635619380784151Records →
Setmelanotide (Imcivree)FDA-approved
Approved in the US
25514870172714Records →
SS-31 (Elamipretide)FDA-approved
Approved in the US
Failed when tested for one use
511188811730141Records →
T
TamoxifenFDA-approved
Approved in the US
29,7583832455168419Records →
Teduglutide (Gattex)FDA-approved
Approved in the US
417298178295020Records →
Teriparatide (Forteo)FDA-approved
Approved in the US
5,0253631956019632Records →
Terlipressin (Terlivaz)FDA-approved
Approved in the US
1,369416219861156Records →
TesamorelinFDA-approved
Approved in the US
1329848242410Records →
TirzepatideFDA-approved
Approved in the US
2,9313891776429932Records →
ToremifeneFDA-approved
Approved in the US
88436824479412Records →
TriptorelinFDA-approved
Approved in the US
1,53339125510131313Records →
V
Vitamin B12Supplement or cosmetic
Approved in the US
by injection only
1,41035019651786161Records →
Z
ZiconotideFDA-approved
Approved in the US
43222310716141Records →
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.