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Compare peptides

Head-to-head comparisons grounded in trial data where it exists. We flag when a comparison rests on preclinical evidence only.

Evidence flagThis comparison rests on preclinical evidence only — no completed human efficacy trials exist for these compounds. Treat all claims as research-stage.
BPC-157

aka Body Protection Compound 157, PL 14736

Research onlyPreclinical / research-only

Molecular formula

C62H98N16O22

C62H98N16O22198 atoms
3D structure
Loading structure…

2D structure — no 3D conformer publishedPubChem CID 9941957 ↗

CategoryHealing & Recovery
Chemical namePentadecapeptide BPC 157
Half-lifeShort (minutes, reported in rodent studies)
Route (research)Subcutaneous / oral (in research)
Discovery1991
ProfileFull cited guide

A synthetic pentadecapeptide derived from a protein found in gastric juice. Studied extensively in animal models for tissue-healing effects; no completed human efficacy trials exist.

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GHK-Cu

aka Copper tripeptide-1, Copper peptide

Research onlyPreclinical / research-only

Molecular formula

C14H22N6O4·Cu

C14H22Cu1N6O447 atoms
3D structure
Loading structure…

2D structure — no 3D conformer publishedPubChem CID 139035031 ↗

CategoryHealing & Recovery
Chemical nameGlycyl-L-histidyl-L-lysine copper(II)
Half-life—
Route (research)Topical (cosmetic) / subcutaneous (in research)
Discovery—
ProfileSummary stub

A copper-binding tripeptide present naturally in human plasma. Widely used in topical cosmetic formulations; studied for skin and wound-related effects.

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Molecular formulae and 3D structures are sourced from PubChem (each viewer links its CID) and cross-checked against the known peptide formula — nothing is estimated. Large peptides have no published 3D conformer, so their real 2D structure is shown and labelled as such; mixtures and compounds with no single PubChem record are left blank rather than fabricated. Evidence tiers are inferred from regulatory status and are not a measure of safety.

In-depth written comparisons

Long-form, sourced analyses for the most-searched pairings.

Semaglutide vs Tirzepatide: What the Trials ShowPublished

A side-by-side of two approved incretin medicines, grounded in head-to-head trial data (SURPASS-2) and their respective phase-3 weight-management programs.

BPC-157 vs TB-500Outline

Two research-only recovery peptides compared on mechanism and evidence base.

Ipamorelin vs CJC-1295Outline

Two growth-hormone secretagogues compared.

Sermorelin vs TesamorelinOutline

A GHRH analog compared with an approved one.

Melanotan I vs Melanotan IIOutline

Two melanocortin agonists compared, with safety context.

GHRP-2 vs GHRP-6Outline

Two growth-hormone-releasing peptides compared.

Selank vs SemaxOutline

Two nootropic research peptides compared.