Understand the research behind peptides — before you spend a dollar on them.
73 peptides and compounds covered: mechanism, evidence quality, and honest notes on what's actually been studied in humans versus what hasn't.
BPC-157
A stable pentadecapeptide fragment of body-protection compound, first isolated from human gastric juice. Precl…
Growth Hormone (GHRH)CJC-1295
A modified GHRH(1-29) analog engineered for improved stability against enzymatic breakdown, intended to produc…
HealingGHK-Cu
A naturally occurring copper-binding tripeptide that declines with age. Topical formulations are among the bet…
LongevityMOTS-c
A mitochondrial-derived peptide encoded in mitochondrial DNA, studied for exercise-mimetic effects on insulin …
Weight LossSemaglutide
A GLP-1 receptor agonist that slows gastric emptying and reduces appetite signaling, administered weekly due t…
Weight LossTirzepatide
A dual GIP/GLP-1 receptor agonist, combining two incretin pathways in a single molecule for an additive effect…
BPC-157: What the Research Actually Shows
A look at the animal data behind the internet's favorite recovery peptide, and the gap between preclinical promise and human evide…
GLP-1, GIP, and Triple Agonists: How the Weight-Loss Peptide Class Actually Works
Semaglutide, tirzepatide, and retatrutide all act on incretin hormone receptors, but each targets a different combination. Here's …
Why CJC-1295 and Ipamorelin Are Almost Always Discussed Together
The pairing shows up constantly in peptide literature because the two compounds act on two different, complementary steps of the s…
TB-500 and Thymosin Beta-4: What the Evidence Actually Covers
TB-500 is often discussed alongside BPC-157 for soft-tissue recovery. A 2026 scoping review shows where that evidence base actuall…
PT-141 (Bremelanotide): The One Peptide in This Category the FDA Actually Approved
Most research peptides never see a completed human trial. PT-141 is the exception — it's an FDA-approved drug called Vyleesi. Here…
Semax: The BDNF Mechanism, and Why the Evidence Base Stops at Russia's Border
Semax has been a prescription drug in Russia since 2011, with a genuine trail of published research behind it. Almost none of that…
How to Read a Research Summary
What “preclinical,” “animal model,” and “no completed human trials” actually mean, and why that distinction matters more than a compound's popularity.
Read more →Reconstitution Math
The arithmetic behind mixing a lyophilized vial to a target concentration — unit conversion only, no amounts recommended.
Read more →Evaluating a Vendor
What third-party testing, COAs, and a vendor's own research-use disclaimers can and can't tell you before you buy.
Read more →Why We Don't Publish Dosing
Every entry on this site stops short of amounts and schedules on purpose — here's the reasoning, and where that information does responsibly live.
Read more →Find a Starting Point
Not sure which compound is relevant to what you're researching? Filter the full directory by category and research status.
Read more →Storage & Handling
How temperature, light, and freeze-thaw cycles affect lyophilized powder versus reconstituted solution, and what shortens shelf life.
Read more →