Clinical Reference

The Peptide Library

What each compound is, how it works, and where it fits — a complete reference for our catalog, in clinical language.

Every entry gives the class, the receptor or pathway involved, what it is studied for, typical half-life, and the reconstitution notes you need when you sit down to dose it. Where the evidence is early or largely preclinical, the entry says so rather than implying more than the data supports — the same standard we teach in the intensive. Educational use only; not medical advice, and not a treatment recommendation.

43 compounds 8 categories 85 dose options

Metabolic & Weight Management

7 compounds

GLP-1/S

Long-acting GLP-1 receptor agonist

A once-weekly GLP-1 receptor agonist used in metabolic and weight-management protocols.

MechanismMimics the incretin hormone GLP-1: enhances glucose-dependent insulin secretion, suppresses glucagon, slows gastric emptying, and acts centrally to reduce appetite.

Studied forWeight management · Glycemic support · Appetite regulation

Available

2 mg5 mg10 mg20 mg30 mg50 mg60 mg75 mg

Half-life: ~7 days (weekly)

GLP-2/T

Dual GIP / GLP-1 receptor agonist

A dual-incretin agonist producing pronounced effects on appetite, glycemia, and body weight.

MechanismCo-activates GIP and GLP-1 receptors for additive effects on insulin sensitivity, satiety, and gastric emptying.

Studied forAdvanced weight management · Glycemic support · Metabolic optimization

Available

5 mg10 mg30 mg50 mg60 mg75 mg100 mg120 mg

Half-life: ~5 days (weekly)

GLP-3/R

Triple GIP / GLP-1 / glucagon agonist

A triple-receptor agonist studied for substantial weight reduction.

MechanismAdds glucagon-receptor activity to the dual-incretin model, increasing energy expenditure alongside appetite suppression.

Studied forInvestigational weight management · Metabolic research

Available

5 mg10 mg20 mg30 mg40 mg60 mg

Half-life: ~6 days (weekly)

Cagrilintide

Long-acting amylin analog

An amylin-receptor agonist studied alongside incretin agents for additive appetite and weight effects.

MechanismActivates amylin and calcitonin receptors to slow gastric emptying and promote satiety through pathways complementary to GLP-1.

Studied forAdjunct to incretin protocols · Satiety support

Available

5 mg10 mg

Half-life: Long-acting (weekly)

Mazdutide

GLP-1 / glucagon dual agonist

A dual GLP-1 and glucagon receptor agonist studied for weight and metabolic outcomes.

MechanismCombines GLP-1-driven satiety with glucagon-receptor activity that can raise energy expenditure.

Studied forWeight management research · Metabolic studies

Available

6 mg

Half-life: Long-acting (weekly)

Survodutide

GLP-1 / glucagon dual agonist

An investigational dual agonist studied for weight management and hepatic-metabolic endpoints.

MechanismEngages GLP-1 and glucagon receptors, pairing appetite suppression with increased energy expenditure.

Studied forWeight management research · Metabolic/hepatic studies

Available

12 mg

Half-life: Long-acting (weekly)

AOD-9604

Modified GH fragment (176-191)

A growth-hormone fragment studied for lipolytic properties without the broader GH effect profile.

MechanismCorresponds to the C-terminal region of GH thought to stimulate lipolysis and inhibit lipogenesis without affecting blood glucose or IGF-1.

Studied forBody-composition research · Lipolysis support

Available

5 mg10 mg

Half-life: Short

Healing, Repair & Recovery

7 compounds

BPC-157

Synthetic pentadecapeptide

A stable gastric peptide derivative widely studied in preclinical models for tissue repair and cytoprotection.

MechanismAppears to promote angiogenesis and modulate growth-factor and nitric-oxide pathways, supporting healing of connective and GI tissue in animal studies.

Studied forConnective-tissue repair research · GI protection research

Available

5 mg10 mg

Half-life: Short

BPC-157 / TB-500

Repair peptide blend

A combination of two repair-oriented peptides studied together for recovery support.

MechanismPairs BPC-157's cytoprotective, angiogenic activity with TB-500's actin-regulating effects on cell migration and remodeling.

Studied forRecovery research · Tissue-repair studies

Available

5mg / 5mg10mg / 10mg

Half-life: Mixed

TB-500

Thymosin beta-4 fragment

A synthetic version of the active region of Thymosin beta-4, studied for cell migration and tissue regeneration.

MechanismRegulates actin, supporting cell migration, angiogenesis, and tissue remodeling in preclinical wound-healing models.

Studied forRecovery research · Tissue-regeneration studies

Available

5 mg10 mg

Half-life: Intermediate

KPV

Alpha-MSH tripeptide fragment

The C-terminal tripeptide of alpha-MSH studied for anti-inflammatory properties.

MechanismThought to act intracellularly to downregulate pro-inflammatory signaling without the pigmentary effects of full-length MSH.

Studied forAnti-inflammatory research · Gut-health studies

Available

10 mg

Half-life: Short

LL-37

Cathelicidin antimicrobial peptide

A human host-defense peptide studied for antimicrobial and immunomodulatory activity.

MechanismDisrupts microbial membranes and modulates innate immune signaling and wound repair.

Studied forAntimicrobial research · Immune-modulation studies

Available

4 mg

Half-life: Short

GHK-Cu

Copper-binding tripeptide

A naturally occurring copper-peptide complex studied for skin remodeling, wound healing, and antioxidant activity.

MechanismDelivers copper intracellularly and modulates genes involved in tissue repair and extracellular-matrix remodeling.

Studied forSkin/aesthetic research · Wound-healing studies

Available

50 mg100 mg

Half-life: Short

ARA-290

Erythropoietin-derived peptide (cibinetide)

An EPO-derived peptide studied for anti-inflammatory and neuropathic-pain applications.

MechanismSelectively engages the innate repair receptor to dampen inflammation and support tissue protection without erythropoietic effects.

Studied forNeuropathic-pain research · Anti-inflammatory studies

Available

16 mg

Half-life: Short

Growth Hormone Secretagogues

8 compounds

CJC-1295 (w/o DAC)

GHRH analog (Mod GRF 1-29)

A short-acting GHRH analog that supports pulsatile growth-hormone release.

MechanismStimulates pituitary GHRH receptors to release GH in a physiologic, pulsatile manner; the no-DAC form has a short duration suited to pulse timing.

Studied forGH-axis research · Recovery studies

Available

5 mg

Half-life: Short

CJC-1295 / Ipamorelin

GHRH analog + ghrelin agonist

A widely paired combination for synergistic growth-hormone release.

MechanismCJC-1295 extends GHRH signaling while Ipamorelin stimulates the ghrelin receptor, together amplifying pulsatile GH with minimal cortisol/prolactin effect.

Studied forRecovery & body-composition research

Available

5mg / 5mg15mg

Half-life: Mixed

Ipamorelin

Selective GH secretagogue

A selective ghrelin-receptor agonist that stimulates GH release with a clean side-effect profile.

MechanismSelectively triggers pituitary GH secretion without meaningfully raising cortisol, prolactin, or appetite.

Studied forGH-support research · Recovery studies

Available

10 mg15 mg

Half-life: ~2 hours

GHRP-6

Growth-hormone-releasing peptide

An early-generation GH secretagogue that also notably stimulates appetite.

MechanismActivates the ghrelin receptor to release GH; characteristically increases hunger signaling.

Studied forGH-axis research · Appetite research

Available

5 mg

Half-life: Short

Hexarelin

Potent GH-releasing peptide

A potent GHRP studied for strong, short-duration growth-hormone release.

MechanismStrongly activates the ghrelin/GHS receptor to drive GH secretion.

Studied forGH-axis research

Available

5 mg

Half-life: Short

Sermorelin

GHRH (1-29) analog

A truncated GHRH analog historically used to assess and support pituitary GH output.

MechanismStimulates the pituitary to release GH in a physiologic, pulsatile manner.

Studied forGH-axis assessment · Age-management studies

Available

10 mg

Half-life: ~10-20 min

Tesamorelin

GHRH analog

A stabilized GHRH analog studied for reduction of visceral adipose tissue.

MechanismBinds GHRH receptors to stimulate endogenous GH, with notable effects on visceral fat in clinical study.

Studied forVisceral-fat research · Metabolic studies

Available

5 mg10 mg20 mg

Half-life: ~25-40 min

IGF-1 LR3

Long-acting IGF-1 analog

A long-arginine IGF-1 analog studied within the growth/repair signaling axis.

MechanismBinds IGF-1 receptors with reduced binding-protein interference, extending IGF-1 signaling duration.

Studied forGrowth/repair research

Available

1 mg

Half-life: Extended vs native IGF-1

Cognitive, Sleep & Mood

4 compounds

Semax

ACTH(4-10) analog (nootropic)

A synthetic peptide derived from ACTH studied for neuroprotective and cognitive-supportive effects.

MechanismModulates BDNF and dopaminergic/serotonergic systems; studied for attention, memory, and neuroprotection.

Studied forCognitive research · Neuroprotection studies

Available

10 mg20 mg

Half-life: Short (often intranasal)

Selank

Tuftsin analog (anxiolytic)

A synthetic analog of tuftsin studied for anxiolytic and cognitive effects.

MechanismInfluences GABAergic and monoamine systems and modulates BDNF; studied for anxiety without sedation in models.

Studied forAnxiety research · Cognitive studies

Available

10 mg

Half-life: Short (often intranasal)

DSIP

Delta sleep-inducing peptide

A naturally occurring neuropeptide studied for sleep modulation and stress resilience.

MechanismProposed to modulate sleep architecture and the stress axis; mechanism remains under investigation.

Studied forSleep research · Stress-axis studies

Available

5 mg

Half-life: Short

Pinealon

Peptide bioregulator (tripeptide)

A short peptide bioregulator studied for neuro-cognitive support.

MechanismProposed to penetrate cells and influence gene expression in neural tissue in research settings.

Studied forCognitive research · Neuro-support studies

Available

10 mg

Half-life: Short

Longevity & Cellular Health

6 compounds

Epithalon

Telomerase-related tetrapeptide

A synthetic tetrapeptide studied for effects on telomerase activity and circadian/endocrine regulation.

MechanismReported in research to influence telomerase expression and pineal/melatonin regulation.

Studied forLongevity research · Circadian studies

Available

10 mg20 mg50 mg

Half-life: Short

NAD+

Coenzyme (cellular energetics)

A central coenzyme in cellular energy metabolism and DNA repair.

MechanismServes as an essential redox cofactor and substrate for sirtuins and PARPs involved in repair and metabolism.

Studied forCellular-energy research · Longevity protocols

Available

500 mg1,000 mg

Half-life: Variable by route

MOTS-c

Mitochondrial-derived peptide

A mitochondrial-encoded peptide studied for metabolic regulation and exercise-mimetic effects.

MechanismInfluences AMPK signaling and metabolic homeostasis, linking mitochondrial function to whole-body metabolism.

Studied forMetabolic research · Mitochondrial studies

Available

10 mg

Half-life: Short

FOXO4-DRI

Senolytic peptide

A designed peptide studied for selectively clearing senescent cells.

MechanismDisrupts the FOXO4-p53 interaction in senescent cells, studied as a senolytic strategy in preclinical models.

Studied forSenolytic research · Longevity studies

Available

5 mg

Half-life: Short

Glutathione

Master antioxidant tripeptide

An endogenous tripeptide antioxidant central to detoxification and redox balance.

MechanismNeutralizes reactive oxygen species and supports phase-II detoxification pathways.

Studied forAntioxidant research · Detoxification support

Available

200 mg500 mg1,500 mg2,000 mg

Half-life: Short

Elamipretide (SS-31)

Mitochondria-targeting peptide

A mitochondria-targeted peptide studied for restoring mitochondrial efficiency.

MechanismBinds cardiolipin on the inner mitochondrial membrane, supporting electron-transport efficiency and reducing oxidative stress.

Studied forMitochondrial research · Longevity studies

Available

10 mg30 mg

Half-life: Short

Immune & Anti-Inflammatory

3 compounds

Thymosin Alpha-1

Thymic immunomodulatory peptide

A thymic peptide studied for modulation and restoration of immune function.

MechanismPromotes T-cell maturation and balances innate/adaptive immune responses.

Studied forImmune-modulation research · Recovery studies

Available

5 mg10 mg15 mg

Half-life: ~2 hours

Thymalin

Thymic peptide complex

A thymus-derived peptide preparation studied for immune regulation.

MechanismSupports normalization of T- and B-lymphocyte balance in research settings.

Studied forImmune-regulation research

Available

10 mg

Half-life: Short

VIP

Vasoactive intestinal peptide

A signaling peptide studied for anti-inflammatory and immune-balancing effects, often delivered intranasally.

MechanismActs on VPAC receptors to modulate inflammatory signaling and support mucosal/immune homeostasis.

Studied forAnti-inflammatory research · Mucosal-immune studies

Available

7.5 mg

Half-life: Very short

Sexual & Reproductive Health

5 compounds

PT-141

Melanocortin receptor agonist

A melanocortin agonist (bremelanotide) studied for sexual-desire support in both sexes.

MechanismActs centrally on melanocortin receptors rather than the vascular system, influencing desire pathways.

Studied forLibido research · Sexual-health studies

Available

10 mg

Half-life: ~2-3 hours

Kisspeptin

Reproductive neuropeptide

A key upstream regulator of the reproductive hormone axis studied for fertility and hormonal signaling.

MechanismStimulates GnRH release, driving downstream LH/FSH and sex-hormone production.

Studied forReproductive-axis research · Fertility studies

Available

10 mg

Half-life: Short

Oxytocin

Neurohypophysial hormone

A naturally occurring hormone studied for bonding, mood, and social-behavior effects.

MechanismActs on oxytocin receptors centrally and peripherally, influencing affiliative behavior.

Studied forMood/bonding research · Behavioral studies

Available

2 mg

Half-life: Very short

HCG

Human chorionic gonadotropin

A gonadotropin studied for support of endogenous sex-hormone production.

MechanismMimics LH at its receptor, stimulating gonadal steroidogenesis.

Studied forHormonal-axis research · Fertility studies

Available

5,000 IU10,000 IU15,000 IU

Half-life: ~24-36 hours

HMG

Human menopausal gonadotropin

A gonadotropin preparation studied for reproductive-axis support.

MechanismProvides FSH/LH activity to stimulate gonadal function.

Studied forFertility research · Hormonal-axis studies

Available

75 IU

Half-life: Intermediate

Cosmetic & Specialty Blends

3 compounds

GLOW

Skin & recovery peptide blend

A combination blend studied for skin quality and recovery (commonly GHK-Cu with repair peptides).

MechanismPairs copper-peptide skin-remodeling activity with repair peptides supporting tissue and aesthetic outcomes.

Studied forAesthetic research · Skin/recovery studies

Available

42 mg70 mg

Half-life: Mixed

KLOW

Skin & gut peptide blend

An extended blend adding KPV to the GLOW concept for skin and anti-inflammatory support.

MechanismCombines copper-peptide and repair activity with KPV's anti-inflammatory signaling.

Studied forAesthetic research · Skin/anti-inflammatory studies

Available

80 mg

Half-life: Mixed

SNAP-8

Topical cosmetic octapeptide

An acetyl octapeptide studied for the appearance of expression lines.

MechanismStudied for modulating neurotransmitter release at the neuromuscular junction to soften expression lines (topical research).

Studied forCosmetic research

Available

20 mg

Half-life: Topical

This library is provided for the education of licensed clinicians and does not constitute medical advice or an endorsement of any particular use. Many peptides referenced are not FDA-approved. Verify regulatory status and exercise independent clinical judgment.