What the Science Actually Says

5-amino-1-methylquinolinium

A small-molecule NNMT inhibitor studied in preclinical metabolic models. Not a peptide despite frequently appearing in peptide catalogs.

Research Focus

NNMT inhibition (preclinical)

Status

Investigational — not approved for human use

ActRIIB-Fc · Activin receptor fusion protein

A soluble activin receptor fusion protein studied as a myostatin pathway inhibitor. Clinical development was discontinued after adverse findings in trials.

Research Focus

Myostatin pathway research

Status

Investigational — clinical development discontinued

FTPP · Prohibitin-targeting peptide

A peptidomimetic studied in preclinical models for targeted effects on adipose tissue vasculature.

Research Focus

Adipose vasculature (preclinical)

Status

Investigational — not approved for human use

Alanine-Histidine-Lysine copper

A copper-binding tripeptide related to GHK-Cu, studied primarily in topical and cosmetic research contexts for hair and scalp applications.

Research Focus

Topical hair/scalp research

Status

Cosmetic and research use

Acadesine · AICA ribonucleotide

A nucleoside analogue widely used as a laboratory tool compound to study AMP-activated protein kinase signalling.

Research Focus

AMPK signalling (in vitro and preclinical)

Status

Investigational — not approved for human use

Anti-Obesity Drug 9604 · hGH fragment 176-191

A modified fragment of the human growth hormone molecule, studied in preclinical models for effects on fat metabolism without the full growth-signalling profile of intact hGH.

Research Focus

Adipose metabolism (preclinical)

Status

Investigational — not approved for human use

Cibinetide · Helix B surface peptide

An 11-amino-acid peptide derived from erythropoietin's helix B, engineered to retain tissue-protective signalling without erythropoietic activity.

Research Focus

Small-fibre neuropathy (clinical trials)

Status

Investigational — completed clinical trials, not approved

A mitochondrial uncoupling agent studied in preclinical metabolic research as a more selective alternative to older uncouplers.

Research Focus

Mitochondrial uncoupling (preclinical)

Status

Investigational — not approved for human use

Body Protection Compound 157

A synthetic peptide derived from a sequence identified in gastric juice, studied in preclinical models for tissue and tendon repair.

Research Focus

Tendon/ligament healing (animal)

Status

Investigational — not approved for human use

Blend · BPC157/TB500

A combination preparation containing two peptides studied separately in preclinical tissue-repair models. Blends are supplied for research convenience; combination effects have not been characterised in controlled human trials.

Research Focus

Combination tissue-repair models (preclinical)

Status

Investigational blend — not approved for human use

AM833

A long-acting amylin analogue under clinical investigation for metabolic and appetite-regulation research, studied both alone and alongside GLP-1 receptor agonists.

Research Focus

Appetite regulation (clinical trials)

Status

Investigational — in clinical trials, not approved

Cagrilintide + Semaglutide

A combination preparation of an amylin analogue with a GLP-1 receptor agonist, under clinical investigation for metabolic research.

Research Focus

Combination metabolic trials

Status

Investigational combination — not approved; contains an analogue of an approved drug class

GHRH analogue

A growth-hormone-releasing hormone analogue studied for its effect on GH and IGF-1.

Research Focus

GH/IGF-1 response (small human studies)

Status

Investigational

Blend

A combination preparation of a GHRH analogue and a ghrelin-receptor agonist, supplied together for research convenience.

Research Focus

Combination GH-axis research (preclinical)

Status

Investigational blend — not approved for human use

CJC-1295 DAC · Drug Affinity Complex GHRH analogue

A GHRH analogue incorporating a drug affinity complex that substantially extends its half-life compared with the non-DAC form.

Research Focus

GH-axis signalling (preclinical)

Status

Investigational — not approved for human use

N-hexanoic-Tyr-Ile-(6) aminohexanoic amide

A small-molecule angiotensin IV analogue studied in preclinical models for effects on synaptic connectivity.

Research Focus

Synaptogenesis (preclinical)

Status

Investigational — not approved for human use

Delta Sleep-Inducing Peptide

A nonapeptide first isolated in the 1970s from cerebral venous blood in animal studies, investigated for possible relationships to sleep-phase regulation.

Research Focus

Sleep-phase research (preclinical, historical)

Status

Investigational — not approved for human use

Epitalon · AEDG peptide

A synthetic tetrapeptide studied primarily in Russian-language literature for reported effects on telomerase activity and pineal function in animal models.

Research Focus

Telomere biology (preclinical)

Status

Investigational — not approved for human use

FST

A glycoprotein that binds and neutralises members of the TGF-beta family including myostatin, studied in muscle and reproductive biology.

Research Focus

Muscle biology research

Status

Research protein — not for human use

FOXO4-DRI · Senolytic peptide

A retro-inverso peptide studied in preclinical senescence research as a senolytic tool compound.

Research Focus

Cellular senescence (preclinical)

Status

Investigational — not approved for human use

Myostatin · Growth Differentiation Factor 8

The myostatin protein itself, a well-characterised negative regulator of muscle mass, supplied as a research protein for laboratory study.

Research Focus

Muscle biology research

Status

Research protein — not for human use

Copper peptide

A copper-binding tripeptide studied primarily in topical/cosmetic contexts for skin.

Research Focus

Topical skin studies (human)

Status

Cosmetic and research use

Pralmorelin

A growth-hormone-releasing peptide studied for its GH secretagogue activity; used diagnostically in some jurisdictions.

Research Focus

GH-axis research

Status

Investigational in most territories — not FDA approved

One of the earliest studied growth-hormone-releasing peptides, notable in research for pronounced appetite-stimulating effects alongside GH release.

Research Focus

GH-axis research

Status

Investigational — not approved for human use

Blend

A multi-peptide research preparation combining compounds studied individually in tissue and dermal research models.

Research Focus

Dermal and tissue research (preclinical)

Status

Investigational blend — not approved for human use

Tirzepatide analogue

A dual GIP/GLP-1 receptor agonist analogue. The reference molecule has been extensively studied in large controlled trials and is the active ingredient of FDA-approved prescription products.

Research Focus

Glycaemic control (clinical)

Status

Analogue of an approved drug substance — research supply is NOT an approved medicine

Examorelin

A synthetic hexapeptide GH secretagogue studied for both pituitary and cardiac-tissue effects in research models.

Research Focus

GH-axis research

Status

Investigational — not approved for human use

AOD-related fragment · Lipolytic fragment

A C-terminal fragment of the growth hormone molecule studied in preclinical models for effects on fat metabolism without the growth-signalling activity of intact hGH.

Research Focus

Adipose metabolism (preclinical)

Status

Investigational — not approved for human use

Long R3 IGF-1

A modified insulin-like growth factor analogue with reduced binding-protein affinity, used widely as a cell-culture supplement in laboratory research.

Research Focus

Cell culture research

Status

Investigational — not approved for human use

IGF-1 DES(1-3)

A truncated IGF-1 variant lacking the first three amino acids, giving markedly reduced binding-protein affinity.

Research Focus

Cell culture research

Status

Investigational — not approved for human use

GH secretagogue

A growth-hormone secretagogue studied for its selective GH-releasing effect.

Research Focus

GH response (human studies)

Status

Investigational

Metastin fragment · KP-10

A fragment of the kisspeptin protein studied for its central role in reproductive-axis signalling, including in published human research settings.

Research Focus

Reproductive-axis signalling (clinical research)

Status

Investigational — not approved for human use

GHK-Cu + TB-500 + BPC-157 + KPV

A four-component research preparation combining copper peptide, thymosin fragment, gastric pentadecapeptide, and a tripeptide studied in inflammation models.

Research Focus

Combination tissue-repair research (preclinical)

Status

Investigational blend — not approved for human use

Lys-Pro-Val · alpha-MSH fragment

A short tripeptide fragment of alpha-MSH studied in preclinical models for inflammatory signalling.

Research Focus

Inflammatory models (animal)

Status

Investigational — not approved for human use

Cathelicidin · hCAP-18 fragment

The only known human cathelicidin antimicrobial peptide, studied extensively in innate immunity and wound research.

Research Focus

Antimicrobial research

Status

Investigational — not approved for human use

IBI362 · LY3305677

A GLP-1 and glucagon receptor dual agonist based on oxyntomodulin, under clinical investigation primarily in Asian markets.

Research Focus

Metabolic regulation (clinical trials)

Status

Investigational — in clinical trials, not approved

N-acetyl-5-methoxytryptamine

A well-characterised hormone central to circadian regulation. Oral forms are widely available as regulated dietary supplements; this is supplied as research material.

Research Focus

Circadian biology

Status

Research material — oral supplements are separately regulated

Mechano Growth Factor · IGF-1Ec splice variant

A splice variant of IGF-1 expressed in response to mechanical loading, studied in muscle-repair research models.

Research Focus

Muscle repair (preclinical)

Status

Investigational — not approved for human use

Mitochondrial ORF of the 12S rRNA type-c

A mitochondria-derived peptide studied for roles in metabolic regulation and exercise physiology.

Research Focus

Metabolic models (animal)

Status

Investigational — not approved for human use

Melanotan 1 · Afamelanotide analogue

An alpha-MSH analogue studied for effects on melanogenesis. A related molecule holds narrow regulatory approval in some jurisdictions for a rare photosensitivity condition.

Research Focus

Melanogenesis research

Status

Analogue of a compound approved in limited territories — research supply is not a medicine

Melanotan 2

A non-selective melanocortin receptor agonist studied for pigmentation effects. Never approved by any regulator.

Research Focus

Melanogenesis research (preclinical)

Status

Investigational — not approved for human use

Nicotinamide adenine dinucleotide

A coenzyme central to cellular energy metabolism. Precursors are widely studied; direct NAD+ administration is less well characterised.

Research Focus

Precursor supplementation (human trials)

Status

Sold as a supplement/research material; IV and injectable use is not FDA-approved

Spadin analogue

A spadin-derived peptide studied in animal models for effects on TREK-1 channel activity.

Research Focus

TREK-1 channel research (preclinical)

Status

Investigational — not approved for human use

PEGylated Mechano Growth Factor

A PEGylated form of mechano growth factor with extended stability compared with the unmodified peptide.

Research Focus

Muscle repair (preclinical)

Status

Investigational — not approved for human use

EDR peptide

A synthetic tripeptide studied primarily in Russian-language literature for reported neuroprotective effects in animal models.

Research Focus

Neuroprotection models (preclinical)

Status

Investigational — not approved for human use

p53-derived peptide

A peptide derived from a p53 domain fused to a membrane-penetrating sequence, studied in cancer cell-line research.

Research Focus

Cancer cell-line research (in vitro)

Status

Investigational — not approved for human use

Bremelanotide

A melanocortin receptor agonist. The reference molecule completed clinical trials and is the active ingredient of an FDA-approved prescription product for a specific indication.

Research Focus

Melanocortin signalling (clinical)

Status

Analogue of an approved drug substance — research supply is NOT an approved medicine

Bacteriostatic diluent

A sterile diluent used in laboratory settings to reconstitute lyophilised research materials for in-vitro work and analysis.

Research Focus

Laboratory sample preparation

Status

Laboratory supply — not a therapeutic product

Retatrutide · GLP3-Reta · Triple agonist (GLP-1/GIP/glucagon)

An investigational triple-agonist studied in large trials for weight and metabolic outcomes. Not FDA-approved and has no legal compounding pathway.

Research Focus

Weight reduction (Phase 3 human trials)

Status

Investigational — Phase 3 (not approved; anticipated ~2027)

TP-7

A synthetic heptapeptide derived from tuftsin, studied primarily in Russian research literature for effects on anxiety-related behaviour in animal models.

Research Focus

Anxiolytic behaviour models (preclinical)

Status

Investigational — not approved for human use

ACTH(4-10) analogue

A synthetic peptide derived from a fragment of adrenocorticotropic hormone, studied largely in Russian literature for neuroprotective and cognitive endpoints in animal models.

Research Focus

Neuroprotection models (preclinical)

Status

Investigational — not approved for human use

GRF 1-29

A growth-hormone-releasing hormone analogue comprising the first 29 amino acids of GHRH. Historically used diagnostically before withdrawal from the US market for commercial reasons.

Research Focus

GH-axis diagnostics (historical clinical)

Status

Previously approved for a specific indication; research supply is NOT an approved medicine

A small-molecule ERR agonist studied in preclinical models as an exercise-mimetic tool compound.

Research Focus

Exercise-mimetic research (preclinical)

Status

Investigational — not approved for human use

Acetyl Octapeptide-3

An eight-amino-acid peptide used widely as a topical cosmetic ingredient, studied for effects on expression-line appearance.

Research Focus

Topical cosmetic studies

Status

Cosmetic ingredient

Elamipretide

A mitochondria-targeting peptide that has been evaluated in human clinical trials for mitochondrial disease indications.

Research Focus

Primary mitochondrial myopathy (human trials)

Status

Investigational — studied in clinical trials, not approved

BI 456906

A dual GLP-1 and glucagon receptor agonist under clinical investigation for metabolic research. Not approved by any regulator.

Research Focus

Metabolic regulation (clinical trials)

Status

Investigational — in clinical trials, not approved

Thymosin beta-4 fragment

A synthetic fragment related to thymosin beta-4, studied in animal and laboratory models for tissue repair.

Research Focus

Wound/tissue models (animal)

Status

Investigational — not approved for human use

TH9507

A stabilised GHRH analogue. The reference molecule completed controlled clinical trials and is the active ingredient of an FDA-approved prescription product for a specific, narrow indication.

Research Focus

Visceral adiposity (clinical trials)

Status

Analogue of an approved drug substance — research supply is NOT an approved medicine

Thymus peptide complex

A thymus-derived peptide preparation studied largely in Russian-language literature for immunomodulatory endpoints.

Research Focus

Immune modulation (preclinical)

Status

Investigational — not approved for human use

Ta1 · Thymalfasin

A 28-amino-acid peptide derived from prothymosin alpha, studied for immunomodulatory activity. Approved for certain indications in some jurisdictions but not by the FDA.

Research Focus

Immune modulation (clinical, non-US)

Status

Approved in some countries; NOT approved in the US — research supply is not a medicine

Vasoactive Intestinal Peptide · Aviptadil analogue

A 28-amino-acid neuropeptide with broad signalling roles, studied in pulmonary and immune research contexts.

Research Focus

Pulmonary research (clinical trials)

Status

Investigational — not approved for general use