Research library
Peptides Research Team
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How to Spot Unreliable Peptide Vendors: 10 Red Flags (2026)
Ten red flags drawn from FDA enforcement letters, an FTC rule and published test-buys of online sellers — plus what each so-called…
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Peptide Purity Testing Explained: HPLC, Mass Spec and Third-Party Labs
A methods guide to peptide purity testing: what RP-HPLC, mass spectrometry, amino acid analysis and endotoxin testing each measure, what the compendial…
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Tirzepatide vs Retatrutide: Mechanism, Evidence & Key Differences
One molecule carries an FDA label and a boxed warning; the other has published phase 2 data and four phase 3 trials…
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Tesamorelin: Research, Mechanism, Risks & Legal Status (2026)
The one growth hormone secretagogue carrying an FDA label: what the Egrifta trials measured, what the warnings say, and why research-use vials…
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BPC-157 vs TB-500: Mechanism, Evidence & Key Differences
Two recovery peptides with large preclinical literatures and almost no human record, compared axis by axis against the site’s framework.
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Semaglutide vs Tirzepatide: Mechanism, Evidence & Key Differences
What the one direct head-to-head trial found, where the two molecules differ mechanistically, and how their evidence bases compare axis by axis.
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GHK-Cu (Copper Peptide): Research, Mechanism, Risks & Legal Status (2026)
An evidence-graded overview of GHK-Cu: what the copper tripeptide is, what the topical human trials measured, what remains animal and in-vitro work,…
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BPC-157: Research, Mechanism, Risks & Legal Status (2026)
An evidence-graded overview of BPC-157: what the animal and in-vitro literature actually shows, how little human data exists, the documented risks, and…
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Ipamorelin: Research, Mechanism, Risks & Legal Status (2026)
An evidence-graded profile of ipamorelin: what the swine selectivity data showed, what the one controlled human trial did not, and where US…
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Retatrutide: Research, Mechanism, Risks & Legal Status (2026)
An evidence-graded overview of retatrutide: triple GIP/GLP-1/glucagon receptor pharmacology, what the phase 2 trials found, documented risks, and why it is not…