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The encyclopedia

Every peptide, plainly explained

What each peptide is, its status in Australia, and what the evidence actually shows — without dosing, protocols or sourcing.

AllHealing & recoveryGrowth hormoneCosmetic & skinMetabolic & weightHormonal & endocrineOther
63 entries
STATUS KEY Prescription / registered Topical or compounded Not ARTG-approved Not for human use
Not ARTG-approved

BPC-157

Body Protection Compound

A synthetic peptide commonly discussed in the context of tissue and tendon recovery.

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Not ARTG-approved

TB-500

Thymosin Beta-4 fragment

A synthetic fragment of the Thymosin Beta-4 protein, commonly discussed alongside BPC-157 in recovery contexts.

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Topical / cosmetic

GHK-Cu

Copper tripeptide-1

A naturally occurring copper-binding peptide used widely in topical skincare formulations.

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Prescription medicine

Sermorelin

GHRH analogue

A growth-hormone-releasing hormone analogue.

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Not ARTG-approved

CJC-1295

GHRH analogue

A modified growth-hormone-releasing hormone analogue, often discussed alongside other secretagogues.

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Not ARTG-approved

Ipamorelin

Growth-hormone secretagogue

A selective growth-hormone secretagogue.

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Registered (specialist)

Tesamorelin

GHRH analogue

A growth-hormone-releasing factor analogue, approved overseas for a defined HIV-related indication.

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Investigational

Retatrutide

Triple-agonist (investigational)

An investigational metabolic peptide in clinical trials.

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Not ARTG-approved

AOD-9604

Growth-hormone fragment

A fragment of growth hormone historically investigated in metabolic contexts.

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Not for human use

Melanotan II

Melanocortin agonist

A synthetic peptide promoted for skin tanning, sold illicitly online and via some gyms.

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Research / unapproved

Kisspeptin

Reproductive signalling peptide

A signalling peptide involved in reproductive hormone regulation, studied in research settings.

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Compounded use

Thymosin Alpha-1

Immune-modulating peptide

An immune-modulating peptide approved as a medicine in some overseas markets.

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Prescription medicine

Semaglutide

GLP-1 receptor agonist

A GLP-1 receptor agonist registered for type 2 diabetes and chronic weight management.

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Prescription medicine

Tirzepatide

Dual GIP/GLP-1 agonist

A dual GIP/GLP-1 receptor agonist used in metabolic and weight management contexts.

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Prescription medicine

Liraglutide

GLP-1 receptor agonist

An earlier-generation GLP-1 receptor agonist used in diabetes and weight-management contexts.

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Not ARTG-approved

MOTS-c

Mitochondrial-derived peptide

A mitochondrial-derived peptide commonly discussed in longevity and metabolic contexts.

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Not ARTG-approved

Epitalon

Pineal tetrapeptide

A short synthetic peptide discussed in longevity and sleep contexts.

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Not ARTG-approved

DSIP

Delta sleep-inducing peptide

A neuropeptide discussed in sleep contexts.

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Not for human use

Selank

Synthetic anxiolytic peptide

A synthetic peptide developed in Russia and discussed in mood and anxiety contexts.

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Not for human use

Semax

Synthetic neuropeptide

A synthetic peptide developed in Russia and discussed in cognition and focus contexts.

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Not ARTG-approved

Hexarelin

Growth-hormone secretagogue

A growth-hormone-releasing hexapeptide.

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Prescription medicine

Somatropin

Recombinant human growth hormone

Recombinant human growth hormone, a registered medicine for defined indications.

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Not ARTG-approved

PT-141 (Bremelanotide)

Melanocortin agonist

A melanocortin agonist discussed in sexual-function contexts.

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Prescription medicine

Oxytocin

Endogenous peptide hormone

An endogenous peptide hormone used clinically in obstetric and other defined indications.

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Investigational

Follistatin

Myostatin-binding protein

A protein discussed in muscle and metabolic research contexts.

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Research

LL-37

Cathelicidin antimicrobial peptide

A human-derived antimicrobial peptide of research interest.

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Investigational

Adipotide

Investigational metabolic peptide (FTPP)

An investigational peptide discussed in metabolic and weight contexts.

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Food / supplement

Collagen peptides

Hydrolysed collagen

Hydrolysed collagen, sold as a dietary supplement and food ingredient.

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Topical / cosmetic

Argireline

Acetyl Hexapeptide-8

A topical cosmetic peptide used in skincare formulations.

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Topical / cosmetic

Matrixyl

Palmitoyl Pentapeptide-4

A topical cosmetic peptide used in anti-ageing skincare formulations.

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Not ARTG-approved

IGF-1 LR3

Long-acting IGF-1 analogue

A long-acting analogue of insulin-like growth factor-1.

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Investigational

SS-31 (Elamipretide)

Mitochondrial-targeting peptide

An investigational peptide that targets mitochondrial function.

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Prescription medicine

Desmopressin (DDAVP)

Vasopressin analogue

A synthetic analogue of the hormone vasopressin, used to reduce urine production.

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Prescription (specialist)

Octreotide

Somatostatin analogue

A synthetic somatostatin analogue that suppresses several hormones, including growth hormone.

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Prescription (specialist)

Lanreotide

Somatostatin analogue

A long-acting somatostatin analogue, closely related to octreotide.

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Prescription (specialist)

Teriparatide

Parathyroid hormone (1-34) analogue

A recombinant fragment of parathyroid hormone that stimulates new bone formation.

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Prescription medicine

Leuprorelin

GnRH agonist

A gonadotrophin-releasing hormone (GnRH) agonist that, with continuous use, suppresses sex-hormone production.

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Prescription medicine

Goserelin

GnRH agonist

A GnRH agonist implant that suppresses sex-hormone production with continuous use.

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Prescription medicine

Triptorelin

GnRH agonist

A GnRH agonist used to suppress sex-hormone production.

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Prescription medicine

Gonadorelin

GnRH (synthetic)

Synthetic gonadotrophin-releasing hormone, used diagnostically and in some fertility contexts.

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Prescription medicine

Glucagon

Pancreatic peptide hormone

A peptide hormone that raises blood glucose; the counterpart to insulin.

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Prescription medicine

Calcitonin (salmon)

Calcium-regulating peptide

A peptide hormone that lowers blood calcium, available as a synthetic salmon calcitonin.

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Prescription medicine

Linaclotide

Guanylate cyclase-C agonist

A peptide that acts in the gut, used for constipation-predominant IBS and chronic constipation.

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Registered (specialist)

Afamelanotide (Scenesse)

Alpha-MSH analogue

A melanocortin analogue implant that increases melanin, used to protect skin in a rare light-sensitivity condition.

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Prescription medicine

Dulaglutide

GLP-1 receptor agonist

A once-weekly GLP-1 receptor agonist used in type 2 diabetes.

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Prescription medicine

Exenatide

GLP-1 receptor agonist

An earlier-generation GLP-1 receptor agonist used in type 2 diabetes.

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Investigational

Cagrilintide

Amylin analogue (investigational)

A long-acting amylin analogue studied for weight management, often alongside semaglutide (as “CagriSema”).

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Investigational

Survodutide

GLP-1 / glucagon dual agonist (investigational)

An investigational dual GLP-1/glucagon receptor agonist studied for weight management and liver disease.

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Investigational

Mazdutide

GLP-1 / glucagon dual agonist (investigational)

An investigational dual GLP-1/glucagon receptor agonist studied for weight management.

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Not ARTG-approved

GHRP-2

Growth-hormone-releasing peptide

A growth-hormone-releasing peptide that stimulates growth-hormone secretion.

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Not ARTG-approved

GHRP-6

Growth-hormone-releasing peptide

A growth-hormone-releasing peptide that stimulates growth-hormone secretion and can increase appetite.

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Not ARTG-approved

HGH Fragment 176-191

Growth-hormone fragment

A fragment of growth hormone marketed for fat loss; closely related to AOD-9604.

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Research / unapproved

KPV

Anti-inflammatory tripeptide

A short peptide fragment (lysine-proline-valine) studied for anti-inflammatory effects, including in the gut.

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Investigational

ARA-290 (Cibinetide)

EPO-derived peptide (investigational)

An investigational peptide derived from erythropoietin, studied for neuropathic pain and inflammation.

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Research / unapproved

VIP

Vasoactive intestinal peptide

A naturally occurring signalling peptide with roles in inflammation and the airways, studied in research contexts.

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Research

Humanin

Mitochondrial-derived peptide

A mitochondrial-derived peptide of research interest in ageing and metabolism.

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Research

Thymulin

Thymic peptide

A thymus-derived peptide involved in immune regulation, studied in research settings.

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Investigational

Larazotide

Tight-junction regulator (investigational)

An investigational peptide studied for coeliac disease, acting on the gut lining.

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Research / unapproved

Dihexa

Angiotensin-derived peptide

A synthetic peptide studied in research for effects on nerve-cell connections and cognition.

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Not ARTG-approved

Cerebrolysin

Peptide preparation (porcine-derived)

A peptide preparation derived from pig brain tissue, used in some overseas markets for neurological conditions.

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Research / unapproved

P21 (P021)

NGF-derived peptide

A research peptide derived from nerve growth factor, studied for effects on brain-cell growth.

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Topical / cosmetic

SNAP-8

Acetyl Octapeptide-3

A topical cosmetic peptide used in anti-ageing skincare, related in concept to Argireline.

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Supplement / compounded

Glutathione

Antioxidant tripeptide

A naturally occurring antioxidant tripeptide, sold as an oral supplement and marketed in injectable “wellness” and skin-whitening contexts.

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This is general education, not medical advice. Peptides.au does not sell, supply, recommend or promote any product or clinic. Always speak with a registered Australian health practitioner before making any health decision.