Research Encyclopedia

The Peptide Encyclopedia

A comprehensive, science-referenced guide to research peptides — what they do, how they work, research dosing, reconstitution, and the studies behind them. Browse by category or search to explore each compound on its own page.

51 peptides 10 categories Research use only

Showing 51 peptides

Weight Loss & Metabolic

5-Amino-1MQ

5-amino-1-methylquinolinium

An NAMPT inhibitor that boosts NAD+ levels and enhances energy metabolism, researched for fat loss.

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Healing & Recovery

AHK-Cu

Alanine-Histidine-Lysine-Copper · Copper AHK

A copper-binding tripeptide studied for hair follicle stimulation, collagen synthesis, and skin repair.

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Weight Loss & Metabolic

AOD-9604

hGH fragment 177-191 · Anti-Obesity Drug 9604

A modified fragment of human growth hormone (amino acids 177–191) targeting fat metabolism without affecting blood sugar.

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Cosmetic

Argireline

Acetyl Hexapeptide-8 · Acetyl Hexapeptide-3

A cosmetic hexapeptide that reduces expression wrinkles by relaxing facial muscles.

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Healing & Recovery

BPC-157

Body Protection Compound 157 · PL 14736

A stable gastric pentadecapeptide that accelerates healing of tendons, ligaments, muscle, bone, and the gastrointestinal tract.

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Weight Loss & Metabolic

Cagrilintide

Amylin analogue

A long-acting amylin/calcitonin receptor agonist promoting appetite suppression, often combined with GLP-1 agents.

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Cognitive & Nootropic

Cerebrolysin

Porcine neurotrophic peptides

A porcine-derived complex of neurotrophic peptides supporting neuroprotection and cognitive recovery.

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Growth Hormone Secretagogues

CJC-1295

CJC-1295 with/without DAC · Modified GHRH

A long-acting GHRH analogue that extends growth hormone pulses; often stacked with ipamorelin for synergistic GH release.

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Cognitive & Nootropic

Dihexa

N-hexanoic-Tyr-Ile-(6) aminohexanoic amide · Angiotensin IV analogue

A highly potent angiotensin IV analogue researched for cognitive enhancement and synaptogenesis.

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Sleep & Stress

DSIP (Delta Sleep-Inducing Peptide)

Delta sleep-inducing peptide

A neuropeptide that modulates sleep via GABA and serotonin pathways, with antioxidant properties.

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Longevity & Senolytic

Epitalon

Epithalon · Epithalamin

A tetrapeptide that stimulates telomerase activity, researched for longevity and melatonin regulation.

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Longevity & Senolytic

FOXO4-DRI

FOXO4-DRI · Senolytic peptide

A senolytic peptide that selectively clears senescent ("zombie") cells by disrupting the FOXO4-p53 interaction.

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Healing & Recovery

GHK-Cu (Copper Peptide)

Glycyl-L-Histidyl-L-Lysine-Copper · Copper Tripeptide-1

A naturally occurring copper-binding tripeptide that stimulates collagen synthesis, wound healing, and skin repair.

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Growth Hormone Secretagogues

GHRP-2

Pralmorelin · Growth hormone releasing peptide 2

A potent ghrelin receptor agonist that stimulates strong, dose-dependent GH release.

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Growth Hormone Secretagogues

GHRP-6

Growth hormone releasing peptide 6

A ghrelin-mimetic GHRP that stimulates GH release and notably increases appetite.

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Sleep & Stress

Glutathione

GSH · L-glutathione

The body's master antioxidant supporting detoxification, immune function, and skin brightening.

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Growth Hormone Secretagogues

HCG

Human Chorionic Gonadotropin · hCG

A luteinizing hormone analogue supporting testosterone production and fertility.

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Growth Hormone Secretagogues

Hexarelin

GHRP-6 analogue · Hexarelin acetate

A potent synthetic GHRP that strongly stimulates GH release, with additional cardioprotective effects.

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Growth Hormone Secretagogues

HGH (Somatropin)

Recombinant human growth hormone · rhGH

Recombinant human growth hormone supporting muscle growth, recovery, fat metabolism, and overall anabolism.

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Growth Hormone Secretagogues

IGF-1 LR3

Long R3 IGF-1 · Insulin-like growth factor 1 analogue

A long-acting analogue of IGF-1 promoting muscle growth, recovery, and nutrient partitioning.

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Growth Hormone Secretagogues

Ipamorelin

GHRP · Growth hormone secretagogue

A highly selective ghrelin mimetic that stimulates GH release with minimal cortisol or prolactin effects.

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Sexual Health

Kisspeptin-10

Kisspeptin · Metastin

A neuropeptide that stimulates GnRH release to regulate reproductive hormone signaling and libido.

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Immune & Anti-Inflammatory

KPV

Alpha-MSH tripeptide · Lys-Pro-Val

A potent anti-inflammatory tripeptide derived from alpha-MSH, researched for gut healing and immune modulation.

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Lipotropic

Kybella (ATX-101)

Deoxycholic acid · PCDC

An injectable deoxycholic acid formulation approved for submental (double chin) fat reduction.

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Sleep & Stress

L-Carnitine

Levocarnitine · Carnitine

An amino-acid derivative that transports fatty acids into mitochondria for energy production and fat metabolism.

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Lipotropic

Lemon Bottle

Lipolysis solution · Riboflavin + PPC + bromelain

A lipolysis injection blend (riboflavin, PPC, bromelain) for local fat reduction; not FDA approved.

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Lipotropic

LIPO-B

Lipotropic B injection

A B-vitamin-focused lipotropic blend supporting fat metabolism and energy.

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Lipotropic

LIPO-C

Lipotropic injection · MIC + B12

A lipotropic injection blend (methionine, inositol, choline, B12) supporting fat metabolism.

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Weight Loss & Metabolic

Liraglutide

GLP-1 receptor agonist · Saxenda/Victoza (branded)

A once-daily GLP-1 receptor agonist used for weight management and type 2 diabetes.

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Immune & Anti-Inflammatory

LL-37

Cathelicidin · hCAP-18 active fragment

A human antimicrobial peptide with broad-spectrum activity and immune-modulating properties.

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Cosmetic

Matrixyl (Matrixyl 3000)

Matrikines · Palmitoyl tripeptide/tetrapeptide

A family of cosmetic matrikine peptides that stimulate collagen and elastin synthesis to reduce wrinkles.

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Sexual Health

Melanotan II

MT-II · Melanotan 2

A melanocortin receptor agonist promoting skin tanning and sexual arousal; not approved for human use.

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Growth Hormone Secretagogues

MGF (Mechano Growth Factor)

IGF-1Ec · Mechano Growth Factor

A splice variant of IGF-1 produced in response to mechanical stress/exercise, driving muscle repair and growth.

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Weight Loss & Metabolic

MOTS-c

Mitochondrial-derived peptide

A mitochondrial-derived peptide that activates AMPK and regulates metabolic function, acting as an exercise mimetic.

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Longevity & Senolytic

NAD+

Nicotinamide adenine dinucleotide

An essential coenzyme for cellular energy (ATP) production and sirtuin activation, declining with age.

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Cognitive & Nootropic

P21

Cerebrolysin-derived peptide · P21 peptide

A synthetic peptide derived from Cerebrolysin, researched for neurogenesis and cognitive enhancement.

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Cognitive & Nootropic

Pinealon

Peptide bioregulator · Brain peptide complex

A peptide bioregulator targeting brain function and cognitive performance.

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Sexual Health

PT-141 (Bremelanotide)

Bremelanotide · Vyleesi (branded)

A melanocortin receptor agonist acting on the CNS to modulate sexual arousal in men and women.

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Weight Loss & Metabolic

Retatrutide

LY3437943

A triple GLP-1, GIP, and glucagon receptor agonist producing substantial, dose-dependent weight loss in clinical trials.

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Cognitive & Nootropic

Selank

Tuftsin analogue · Anxiolytic peptide

An anxiolytic, non-sedating peptide with immune-modulating effects for stress reduction and focus.

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Weight Loss & Metabolic

Semaglutide

GLP-1 receptor agonist · Wegovy/Ozempic (branded)

A long-acting GLP-1 receptor agonist for appetite suppression, weight loss, and glycemic control.

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Cognitive & Nootropic

Semax

ACTH(4-7)-Pro-Gly-Pro · Heptapeptide

An ACTH-derived nootropic peptide enhancing cognition, memory, and BDNF expression.

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Growth Hormone Secretagogues

Sermorelin

GRH 1-29 · GHRH analogue

A bioidentical fragment of GHRH (amino acids 1–29) that stimulates natural, pulsatile growth hormone release.

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Weight Loss & Metabolic

SLU-PP-332

ERR agonist · Exercise mimetic

An ERRα/β/γ agonist enhancing mitochondrial function and exercise endurance — an "exercise in a pill" candidate.

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Cosmetic

Snap-8

Acetyl Octapeptide-3 · Argireline-like peptide

A cosmetic octapeptide providing botox-like muscle relaxation to reduce expression wrinkles.

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Longevity & Senolytic

SS-31 (Elamipretide)

Elamipretide · Bendavia

A mitochondrial-targeted peptide that protects mitochondrial function and reduces oxidative stress.

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Healing & Recovery

TB-500 (Thymosin Beta-4)

Thymosin β4 · Tβ4

A synthetic version of thymosin beta-4 that promotes wound healing, cell migration, and tissue repair through angiogenesis.

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Growth Hormone Secretagogues

Tesamorelin

Egrifta (branded) · GHRH analogue

An FDA-approved GHRH analogue that increases endogenous growth hormone and IGF-1, used for HIV-associated lipodystrophy.

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Immune & Anti-Inflammatory

Thymalin

Thymus peptide bioregulator

A thymus-derived peptide bioregulator supporting immune function and T-cell activity.

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Immune & Anti-Inflammatory

Thymosin Alpha-1

Tα1 · Zadaxin (branded)

An immune-modulating thymic peptide that enhances T-cell function, used in hepatitis and certain cancers.

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Weight Loss & Metabolic

Tirzepatide

LY3298176 · Mounjaro/Zepbound (branded)

A dual GLP-1 and GIP receptor agonist approved for type 2 diabetes and obesity, producing up to ~21% weight loss in trials.

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Research Use Only

This encyclopedia is intended for licensed researchers and educational purposes only. PureLife Health products are not approved for human use by Health Canada or the FDA. The information here does not constitute medical advice. Always consult a qualified medical professional and verify against current scientific literature.