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PeptideGuideA closer look at the research

The collection

Find a peptide.
Follow the evidence.

Each review pairs selected research findings with their limits. Evidence labels describe the sources included; they are not ratings of safety or effectiveness.

6 reviews to explore

Tissue repair research

BPC-157

A closer look at a tendon-healing experiment and the gap between animal findings and human recovery claims.

Animal studyRead review

Tissue repair research

TB-500

Why a trial of thymosin beta-4 eye drops cannot validate injectable TB-500 recovery claims.

Related-molecule trialRead review

Skin biology research

GHK-Cu

What a cell-culture experiment can tell us about skin biology—and what it cannot tell us about visible results.

Cell-culture studyRead review

Ghrelin-receptor research

Ipamorelin

A human trial exists, but its surgical setting and negative efficacy result matter when assessing wellness claims.

Human randomized trialRead review

Metabolic research

Retatrutide

A selected obesity trial shows a weight-loss signal. That finding does not validate products sold outside clinical development.

Human phase 2 trialRead review

Metabolic research

Tirzepatide

A selected randomized obesity trial provides clinical evidence, with clear limits on what that evidence says about other products.

Human phase 3 trialRead review