Source: https://peakpeptides.com/peptides/

The peptide library

# Know what you’re *looking* at.

Twelve of the most-searched names in peptide care, each explained the same way: what it is, where the research stands, its FDA status, and what a prescription route looks like.

How to read a library page

Study summaries identify the model used. Much peptide research is in cells and animals, and a result in rats is not a result in people.

Cells

Animals

Humans

Review

Reading the evidence

Study models, populations and preparations differ. Findings for one do not establish outcomes for another.

## All peptides

- [BPC-157](https://peakpeptides.com/peptides/bpc-157/) (Synthetic peptide): A synthetic 15-amino-acid peptide based on part of a protein found in human gastric juice.
- [TB-500](https://peakpeptides.com/peptides/tb-500/) (Synthetic peptide): A short synthetic fragment of thymosin beta-4, a protein found in most human cells.
- [GHK-Cu](https://peakpeptides.com/peptides/ghk-cu/) (Copper tripeptide): A copper-binding tripeptide that occurs naturally in human plasma.
- [KLOW](https://peakpeptides.com/peptides/klow/) (Blend): A four-peptide blend: BPC-157, TB-500, GHK-Cu and KPV.
- [GLOW](https://peakpeptides.com/peptides/glow/) (Blend): A three-peptide blend: BPC-157, TB-500 and GHK-Cu.
- [Sermorelin](https://peakpeptides.com/peptides/sermorelin/) (Growth hormone): A synthetic copy of the first 29 amino acids of growth-hormone-releasing hormone.
- [CJC-1295 + Ipamorelin](https://peakpeptides.com/peptides/cjc-1295-ipamorelin/) (Growth hormone): Two peptides that act on growth-hormone signals through different receptors, the cells’ signal receivers. Promise Peptides lists the combination; a licensed provider decides. FDA keeps ipamorelin acetate in Category 2 because of significant safety risks. That status applies under section 503B, the rules for registered outsourcing facilities that compound drugs.
- [MOTS-c](https://peakpeptides.com/peptides/mots-c/) (Mitochondrial peptide): A 16-amino-acid peptide encoded in mitochondrial DNA.
- [NAD+](https://peakpeptides.com/peptides/nad-plus/) (Coenzyme): Nicotinamide adenine dinucleotide, a coenzyme every living cell uses in energy metabolism.
- [Semaglutide](https://peakpeptides.com/peptides/semaglutide/) (Metabolic): A GLP-1 receptor agonist. The compounded form is not FDA-approved; approved versions exist.
- [Tirzepatide](https://peakpeptides.com/peptides/tirzepatide/) (Metabolic): A dual GIP and GLP-1 receptor agonist. The compounded form is not FDA-approved; approved versions exist.
- [PT-141](https://peakpeptides.com/peptides/pt-141/) (Melanocortin agonist): Bremelanotide, a synthetic peptide that acts on melanocortin receptors.

Looking by goal instead?

Promise Peptides prescribes these peptides now through licensed U.S. providers. Every request is reviewed; the provider decides and not everyone qualifies. Goal names group treatments and do not establish a benefit.

[Promise Peptides Start an energy visit](https://mypromise.com/solutions?utm_source=peak&utm_medium=affiliate&utm_campaign=library&utm_content=peptides-goals)

Peak may earn money when readers become Promise patients.

For the listed CJC-1295 + Ipamorelin combination, a licensed provider decides. [FDA lists ipamorelin acetate in Category 2 under 503B because of significant safety risks](https://www.fda.gov/drugs/human-drug-compounding/certain-bulk-drug-substances-use-compounding-may-present-significant-safety-risks); its nomination also appears in FDA’s withdrawn table.

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Promise Peptides prescribes these peptides now through licensed U.S. providers. A provider reviews every request and decides whether to prescribe. Not everyone qualifies.

U.S. patients only. Availability varies by state and treatment. Medications are prepared by licensed U.S. compounding pharmacies. Compounded medications are not FDA-approved. Promise is LegitScript-certified; that certification is not FDA approval.

Peak maps the terrain; it does not examine anyone, so nothing here is medical advice, and the decision about any treatment belongs to a licensed provider who has reviewed your health.

Peak may earn money when readers become Promise patients. Peak is not affiliated with any company called Peak Peptides or Peak Performance Peptides.