Peps
What is GHK?
GHK is the Gly-His-Lys tripeptide. It is distinct from GHK-Cu, its copper complex. The selected study examined anxiety-like behavior in male rats.
Biological role or research focus
Peptide identity and preclinical behavior research.
An elevated plus-maze experiment does not establish anxiety treatment in people. Species, route, behavioral interpretation, and peptide identity all constrain translation.
Role reference: Anxiolytic effects of Gly-His-Lys peptide and its analogs. · 2015 ↗
Names you may encounter
Gly-His-Lys
Search terms can include brands, combinations, or historical names. They are not automatic product equivalents.
- Class / identity
- Glycyl-L-histidyl-L-lysine tripeptide
- Research focus
- Peptide identity and preclinical behavior research
- Featured evidence
- Rat behavioral study
- Source check
- October 4, 2026
Source: Anxiolytic effects of Gly-His-Lys peptide and its analogs. · 2015 ↗
Molecular structure
How GHK works
The featured experiment studied behavior after GHK and related sequence variants. It did not establish a human brain mechanism or a clinical anti-anxiety treatment.
Source: Anxiolytic effects of Gly-His-Lys peptide and its analogs. · 2015 ↗
Clinical context & research status
This page covers the free tripeptide and a preclinical behavioral experiment. Findings about copper-complex preparations, skin products, or injected formulations cannot automatically be transferred to GHK.
Source: Anxiolytic effects of Gly-His-Lys peptide and its analogs. · 2015 ↗
What does the evidence show?
Selected published evidence, with the population, findings, and limits kept together. These original summaries draw on publication abstracts; they are not a systematic review.
Rat behavioral study · 2015
GHK behavior study in rats
Did GHK alter anxiety-like behavior in rats?
- Population / model
- Male rats assessed in an elevated plus-maze experiment.
- Study design
- Preclinical comparison of GHK and sequence-related variants using behavioral measures.
- Main finding
- GHK increased time spent in open arms, interpreted as an anxiety-like behavioral change. Sequence modifications produced different responses; the reported response was not simply linear across exposure.
- Limits & context
- An elevated plus-maze experiment does not establish anxiety treatment in people. Species, route, behavioral interpretation, and peptide identity all constrain translation.
Source: Anxiolytic effects of Gly-His-Lys peptide and its analogs. · 2015 ↗
Read the original paper for methods, adverse events, funding, and conflicts of interest. Publisher access may require a subscription.
Further reading · 4 additional publication links
Exact-name PubMed search checked 2026-10-04. These records have not been appraised. A name match can include related compounds, combinations, or other formulations; it does not establish safety or benefit.
Regenerative and Protective Actions of the GHK-Cu Peptide in the Light of the New Gene Data. ↗
International journal of molecular sciences · 2018 Jul 7 · Journal Article, Review
Read available full text ↗
Injectable Peptide Therapy: A Primer for Orthopaedic and Sports Medicine Physicians. ↗
The American journal of sports medicine · 2026 Jan · Journal Article, Review
The potential of GHK as an anti-aging peptide. ↗
Aging pathobiology and therapeutics · 2020 Mar 27 · Journal Article
Read available full text ↗
Therapeutic Peptides in Orthopaedics: Applications, Challenges, and Future Directions. ↗
Journal of the American Academy of Orthopaedic Surgeons. Global research & reviews · 2026 Jan 1 · Journal Article, Review
Read available full text ↗
New editorial updates
New source discoveries
Links appear automatically. Unreviewed discoveries are not verified medical findings.
Safety & precautions
What the featured evidence can tell us
This animal experiment does not establish human safety, an effective clinical exposure, or the safety of a copper-containing preparation.
Source: Anxiolytic effects of Gly-His-Lys peptide and its analogs. · 2015 ↗
Identity, route, and evidence limits
An elevated plus-maze experiment does not establish anxiety treatment in people. Species, route, behavioral interpretation, and peptide identity all constrain translation.
Source: Anxiolytic effects of Gly-His-Lys peptide and its analogs. · 2015 ↗
This is not a complete list of contraindications, interactions, or adverse effects. Medicine labels apply to specific products and indications; research-use listings are not interchangeable with approved medicines.
What are people discussing?
No editorial transcript note has been reviewed for this profile yet. Below are the matching video records available for exploration; title and caption matches are not verified claims.
Watch the source discussions
45 matching video records · 11 with captions indexed.
Across the full library, 30 caption files are indexed from 20,199 inventoried videos. Most transcripts remain unreviewed. Select a thumbnail or timestamp to watch inside PepsRadar. Thumbnail images load from YouTube.
Fouad Abiad Media
BURN FAT FASTER WITH MOTS C | Josh Holyfield | Real Bodybuilding Podcast ↗
Captions indexed · Automatic matches need review
Fouad Abiad Media
RETATRUTIDE: EVERYTHING YOU NEED TO KNOW | Wes Christensen | Fouad Abiad's Real Bodybuilding Podcast ↗
Captions indexed · Automatic matches need review
Mind Pump Show
Hormones, Peptides & Body Transformation with Phil Vella CEO of Vita Bella Health | Mind Pump 2882 ↗
Captions indexed · Automatic matches need review
Mind Pump Show
Peptides vs Bioregulators: The Future of Health Optimization w/ Nick Andrews | Mind Pump 2672 ↗
Captions indexed · Automatic matches need review
Peptide Of The Week
Telehealth vs Research Peptides: The Truth Nobody Tells You | Peptide of the Week Q&A #61 ↗
Captions indexed · Automatic matches need review
Thomas DeLauer
The Best Peptide to Truly Lose Fat is Not GLP-1, it’s MOTS-C to Boost Mitochondria ↗
Captions indexed · Automatic matches need review
Sources & supplier listings
Listings are grouped by the vendor’s stated identity. Blends and modified derivatives are labeled separately. Inclusion is not a quality assessment or an endorsement.
We have not added a supplier for this profile. Missing products and coded listings are not filled with guesses.
Catalog checked 2026-10-04. Seller listings retain their stated intended use. Shops covered: BioLongevity Labs, BioLongevity Supplements, American Peptides, PSPeptides. This is not a market-wide comparison. Affiliate participation does not determine evidence or editorial coverage.
Questions worth asking
- Can GHK-Cu research be counted as research on GHK alone?
- What population, comparator, and route were actually studied?
- An elevated plus-maze experiment does not establish anxiety treatment in people. Species, route, behavioral interpretation, and peptide identity all constrain translation.
- What adverse effects, uncertainty, and conflicts of interest does the original source report?
Frequently asked questions
Can GHK-Cu research be counted as research on GHK alone?
They are related but distinct materials. A copper complex changes chemical identity. Each study should specify which preparation was actually tested.
Source: Anxiolytic effects of Gly-His-Lys peptide and its analogs. · 2015 ↗
Does this page establish a supplier’s product quality?
No. A publication describes its own tested material. It does not verify a supplier listing, batch identity, purity, or clinical suitability.
Source: Anxiolytic effects of Gly-His-Lys peptide and its analogs. · 2015 ↗
References & editorial record
Source notes checked 2026-10-04. Original PepsRadar summaries. Not reviewed by a medical professional. Topic grouping is editorial navigation, not a treatment recommendation. Video notes specify which excerpts were reviewed; no full transcripts are published.