The Peptide Hub

Evidence-first guides to the peptides people actually search for — organized by what they are used for, with FDA-approval status shown on every single one.

Metabolic & GLP-1 Healing & recovery Growth hormone Cognitive & mood Longevity & skin More peptides FDA status tracker

Educational only, not medical advice.

How to read the badges

FDA approved labeled drug, real trial program

Investigational in human trials, not yet approved

Research only little or no human efficacy data

We don’t treat “peptide” as one credibility bucket

Some peptides are FDA-approved medicines with large trial programs. Others are compounds with almost no human data that happen to be popular online. Those are completely different evidence situations, so every card below carries its own status. Browsing by class helps you find a compound; the badge tells you how much to trust what you read next.

Metabolic & GLP-1

Strongest evidence base
Semaglutide FDA approved

Ozempic, Wegovy

GLP-1 receptor agonist with a large trial program and cardiovascular outcomes data.

Tirzepatide FDA approved

Mounjaro, Zepbound

Dual GLP-1/GIP agonist approved for type 2 diabetes and chronic weight management.

Retatrutide Investigational

“Triple G” agonist

GIP/GLP-1/glucagon agonist; five phase 3 trials reported, FDA filing planned Q1 2027; not approved.

Tesamorelin FDA approved

EGRIFTA · narrow indication

GHRH analog approved specifically for HIV-associated lipodystrophy, not general fat loss.

Deeper reading: Semaglutide and tirzepatide half-life · GLP-1 injection tracking · Side-effect guide
Pipeline teardowns: CagriSema vs Wegovy and Zepbound · Foundayo (orforglipron) pill · Survodutide phase 3 · Amycretin (zenagamtide)

Healing & recovery

Tissue, tendon, and gut repair. Heavily discussed in sport and recovery circles, but the human evidence is thin.

Mostly preclinical
BPC-157 Research only

Body Protection Compound

Animal data on tendon and gut healing; no randomized human trials.

TB-500 Research only

Thymosin β-4 fragment

A synthetic fragment linked to a real protein, but sold far ahead of its human evidence.

Growth hormone secretagogues

Compounds that nudge the body’s own growth-hormone axis. Published pharmacology, but none is an approved drug.

Not approved
Ipamorelin Research only

Selective ghrelin-receptor agonist

A selective GH secretagogue tested in people only by vein; its phase 2 trial failed and FDA advisers voted 0–12 against it in 2024.

CJC-1295 Research only

Long-acting GHRH analog

Long-acting GHRH analog tested only in healthy adults; the no-DAC version sold in stacks has no published human study.

Cognitive & mood

Nootropic and anxiolytic peptides studied mainly in Russia; neither is FDA approved.

Russian evidence, not FDA
Semax Not FDA approved

ACTH(4–10) analog

Russian stroke studies; no independent placebo-controlled trials.

Selank Not FDA approved

Synthetic peptide

Studied as an anxiolytic in small Russian trials.

Longevity & skin

Anti-aging and cosmetic peptides. Interesting biology and big claims — the claims usually run well ahead of the human data.

Claims > evidence
Epitalon Research only

Pineal tetrapeptide

Telomerase and lifespan claims come mainly from its developers’ group.

Thymalin Research only

Calf-thymus polypeptide complex

Russian immune and aging studies; not FDA approved; distinct from thymogen (EW).

MOTS-c Research only

Mitochondrial-encoded peptide

Mouse metabolism and fitness data; no published study has given it to people.

SS-31 (elamipretide) FDA approved

FORZINITY · Barth syndrome only

Mitochondria-targeted peptide; approved for one ultra-rare disease, untested for aging.

KPV Research only

Alpha-MSH tripeptide (Lys-Pro-Val)

Mouse colitis studies; no published human trial.

GHK-Cu Research only

Copper tripeptide

Topical skin and wound research; injectable use is unproven.

More peptides: one evidence teardown each

Peptides that trend online but have no profile above yet. Each links to a sourced teardown of the trials, FDA status and safety reports. For a side-by-side view, see the FDA peptide status tracker.

SLU-PP-332 Research only

Small-molecule “exercise pill,” not a peptide

Mice ran longer; no human trial; banned in sport from 2027.

Cerebrolysin Research only

Pig-brain peptide mixture used for stroke abroad

Largest stroke trial neutral; no effect on death; not approved in the US.

MK-677 (ibutamoren) Research only

Oral ghrelin mimetic sold as a “growth hormone peptide”

Raised IGF-1 and lean mass, not strength or function; heart-failure signal; FDA category 2.

AOD-9604 Research only

Growth hormone fragment, “fat-loss” peptide

Oral obesity trials in about 890 people failed; no published human trial of the injection.

Kisspeptin-10 Research only

Reproductive hormone peptide

Briefly raises LH and testosterone, but the effect fades with repeat use; FDA flags it as a safety risk.

Sermorelin Formerly approved

Geref · discontinued 2008

Raised growth hormone in older adults, not strength or sleep; FDA withdrew its approvals in 2009.

PT-141 (bremelanotide) FDA approved

Vyleesi · premenopausal women only

Modest benefit over placebo for low desire; never approved for men.

Melanotan II (MT2) Not approved

Tanning peptide

Darkens skin but is approved nowhere and gives no sun protection; tested products held 43% to 180% of label.

DSIP (emideltide) Research only

Delta sleep-inducing peptide

Small 1980s IV studies; independent trials found little benefit, and FDA advisers voted no.

Dihexa Research only

Nootropic peptide

Never tested in a human trial; three related papers were retracted.

PEG-MGF Research only

Mechano growth factor

Never tested in people; FDA has no human exposure data, and sport has banned it since 2005.

LL-37 Research only

Human cathelicidin peptide

Its largest trial missed its goal; injected use is untested.

Thymosin alpha-1 (TA1) Not FDA approved

Zadaxin · immune peptide

FDA advisers voted 17-4 against compounding it; its largest trial found no survival benefit.

NAD+ drips and shots Not FDA approved

Coenzyme, not a peptide

No placebo-controlled trial has tested NAD+ drips or shots for aging.

Glutathione drips and shots Not FDA approved

Antioxidant tripeptide

FDA and CDC tied 2026 illnesses to supplement-grade powder; there is no FDA-approved glutathione product in the US.

What the evidence supports

  • GLP-1 medicines (semaglutide, tirzepatide) have large randomized trials and labeled indications.
  • Some secretagogues have real, published pharmacology even without an approved product.
  • Approval status and evidence quality are not the same thing — we show both.
  • Compounding or easy online availability does not equal FDA approval.

What we won’t fake certainty about

  • Whether animal-only signals (BPC-157, TB-500) will hold up in humans.
  • Whether single-group longevity claims (epitalon) replicate independently.
  • Whether Russian-only studies (semax, selank, thymalin) replicate elsewhere.
  • Long-term safety of research compounds used off-label without monitoring.

How to check any claim yourself

For approved drugs: Start with the FDA label, pivotal trial publications, and official safety communications.

For research compounds: Ask whether the literature is animal-only, uncontrolled, early-stage, or absent in humans.

For regulatory context

Use enforcement letters, shortage notices, and formal policy updates instead of vendor claims.

Compounding policy watch FDA peptide status tracker Search PubMed

Educational content only. Nothing on this page is medical advice, and peptides described as “research only” are not approved by the FDA for human use. Talk to a qualified clinician before starting or changing any treatment.