Peptide research directory
Explore educational profiles for research peptides and related compounds. Each page summarizes proposed mechanisms, evidence character, safety notes, and regulatory framing — without medical advice or purchasing prescriptions.
Jump to a peptide below — every profile is linked in plain HTML for discovery.
Peptides by category
Metabolic research
BI 456906
A dual GLP-1/glucagon agonist with promising phase 2 weight-loss and liver-fat data, still investigational.
Cag
A long-acting amylin analog studied for appetite suppression and weight loss, often in combination with GLP-1 agonists.
Egrifta
A GHRH analog FDA-approved for reducing visceral fat in HIV-associated lipodystrophy; also studied for broader metabolic effects.
GLP-1/amylin co-agonist
A next-generation co-agonist combining GLP-1 and amylin activity, with strong early-phase weight-loss signals.
GLP-1/glucagon dual agonist
A dual GLP-1/glucagon agonist in development, studied for weight loss and metabolic effects primarily in Asian populations.
HGH fragment 176-191
A growth hormone fragment peptide marketed for fat loss, but human evidence for meaningful body-composition effects is weak.
KEDW bioregulator
A short bioregulator peptide discussed for pancreatic tissue research; clinical evidence is limited.
Mitochondrial open reading frame peptide
A mitochondrial-encoded peptide studied for metabolic and exercise-mimetic effects; human evidence remains emerging and limited.
Retatrutide
An investigational triple-agonist peptide that has shown substantial weight loss and metabolic improvements in phase 2 trials, though it remains unapproved.
Semaglutide
A GLP-1 receptor agonist with strong human evidence for glycemic control and chronic weight management in approved populations.
Tirzepatide
A dual GIP/GLP-1 agonist with among the strongest weight-loss results reported in pivotal obesity trials.
Recovery / injury research
AEDL peptide
A short peptide from the Khavinson bioregulator family studied for bronchial/lung tissue research with limited independent human evidence.
AEDR peptide
A short peptide studied in cardiac tissue bioregulator research; robust human outcome data are lacking.
Body Protection Compound-157
A healing-focused peptide with extensive preclinical recovery data but very limited controlled human evidence.
Cartilage peptide bioregulator
A cartilage-targeted peptide bioregulator promoted for joint support with very limited Western peer-reviewed evidence.
Cathelicidin
A human cathelicidin peptide with antimicrobial and immunomodulatory roles; therapeutic use remains investigational.
Cibinetide
A tissue-protective peptide studied for neuropathy and inflammation with promising but limited clinical results.
Copper peptide GHK
A copper peptide studied for wound healing, collagen support, and hair follicle biology with mixed human evidence.
DAC:GRF
A growth-hormone-releasing hormone analog studied for GH axis stimulation; human pharmacokinetic data exist but broad clinical evidence is limited.
EDG peptide
A short bioregulator peptide discussed for mucosal and bronchial research contexts with limited independent clinical evidence.
Elamipretide
A mitochondria-targeting peptide studied in heart failure and mitochondrial diseases with mixed phase 2/3 results.
EW dipeptide
A dipeptide with regional clinical use history as an immunomodulator; broader international evidence and approvals vary.
GHRP mimetic selective agonist
A selective GH secretagogue peptide with relatively clean GH release profile in studied settings; limited outcome trials.
KED peptide
A short bioregulator peptide discussed for vascular endothelium research; independent human outcome data are limited.
KEDW peptide
A short bioregulator peptide discussed for hepatic tissue research with limited independent clinical validation.
Long R3 IGF-1
A potent IGF-1 analog discussed for muscle and tissue anabolism with significant theoretical risk profile and no approved use.
Lys-Glu
A dipeptide studied in thymic/immune bioregulator research with limited broader clinical validation.
Lys-Pro-Val
An anti-inflammatory tripeptide studied for gut and skin inflammation with emerging but limited human data.
Pegylated Mechano Growth Factor
A pegylated muscle-repair peptide theorized to promote localized regeneration; human evidence is preclinical or anecdotal.
Thymosin Beta-4 Fragment
A regenerative peptide discussed for soft-tissue recovery; human clinical evidence remains primarily preclinical.
Tα1
An immune-modulating peptide with approved use in several countries for viral and immune conditions; research ongoing.
Skin / cosmetic research
Acetyl Glutamyl Heptapeptide-3
An extended cosmetic peptide similar to Argireline, designed for expression wrinkle reduction with limited clinical data.
Acetyl Hexapeptide-8
A topical peptide marketed to soften expression wrinkles by modulating SNARE complex-mediated muscle contraction.
Afamelanotide
An FDA/EMA-approved melanocortin peptide for erythropoietic protoporphyria phototoxicity; also studied for tanning effects.
AHK copper
A copper-complexed tripeptide studied mainly in cosmetic and follicle research; human clinical evidence remains limited.
Bremelanotide
An FDA-approved melanocortin peptide for hypoactive sexual desire disorder in premenopausal women; studied for arousal effects.
Epithalon
A tetrapeptide studied for telomerase and circadian effects in limited research; human evidence remains sparse and contested.
Melanotan 2
A melanocortin peptide producing skin darkening and sometimes libido effects; not approved and associated with significant side effects.
Palmitoyl Pentapeptide-4
A widely used cosmetic peptide that available evidence suggests may support collagen production and reduce wrinkle appearance topically.
Sexual health research
GnRH
The native GnRH decapeptide used diagnostically and therapeutically to stimulate LH/FSH for fertility and hormonal assessment.
Human chorionic gonadotropin
A gonadotropin hormone approved for fertility and select hypogonadism protocols; stimulates testosterone and spermatogenesis.
Human menopausal gonadotropin
A fertility hormone preparation containing FSH and LH activity, used to stimulate egg and sperm production in assisted reproduction.
KEDG peptide
A short bioregulator peptide discussed for testicular / reproductive research contexts; human evidence is limited.
Love hormone
A bonding and social-signaling peptide with approved obstetric use; intranasal social and sexual effects show mixed research results.
Metastin
The full-length kisspeptin form with longer duration of gonadotropin stimulation compared to KP-10 in studied settings.
Metastin 10
A reproductive neuropeptide that stimulates GnRH and gonadotropin release; studied for fertility and hypogonadism research.
Hair research
GH axis research
DAC:GRF
A DAC-conjugated GHRH analog providing extended GH elevation; studied in human PK trials but not FDA approved.
Examorelin
A very potent GH secretagogue studied for cardioprotective and GH effects; not FDA approved therapeutically.
Follistatin
A myostatin/activin-binding protein studied for muscle hypertrophy research; systemic use carries substantial theoretical risks.
GHRH 1-29
A short GHRH analog that stimulates endogenous GH release; previously FDA-approved but discontinued commercially.
Growth hormone releasing hexapeptide
An early GH secretagogue peptide notable for strong GH release and significant appetite stimulation.
Lenomorelin
The endogenous gut-brain peptide that stimulates GH release and appetite; studied in cachexia and diagnostic research.
Modified GRF 1-29
A short-acting GHRH analog designed for pulsatile GH release without DAC extension; research-stage only.
Pralmorelin
A potent GH secretagogue peptide with strong GH release in human studies; approved as diagnostic in some countries.
Sleep / circadian research
Cognitive / neuropeptide research
AEDP peptide
A short peptide from bioregulator research aimed at cortical / CNS tissue models; human evidence remains sparse.
CNTF-derived peptide
A neurotrophic research peptide related to CNTF pathway work; human clinical evidence remains limited.
N-acetyl Selank
A tuftsin-derived peptide studied for anxiolytic and nootropic effects; Western human evidence remains limited.
N-acetyl Semax
An ACTH-derived peptide studied for cognitive enhancement and neuroprotection; human evidence is region-specific.
N-Acetyl Semax Amidate
A Semax-related analog discussed for nootropic research; human evidence is largely extrapolated from Semax literature and remains limited.
N-hexanoic-Tyr-Ile-(6)-amino hexanoic amide
A synthetic peptide studied for neurotrophic and cognitive effects via HGF/c-Met pathway research; human clinical evidence remains very limited.
Spadin analog research peptide
A short research peptide associated with TREK-1 / spadin pathway work in depression and neurophysiology models.
General research
EDL peptide
A short peptide listed in bioregulator catalogs for hepatic/ovarian tissue research; human evidence is limited.
EE peptide bioregulator
A short bioregulator peptide discussed for urinary bladder tissue research with limited independent evidence.
KEDP peptide
A short bioregulator peptide discussed for prostate tissue research with limited independent clinical evidence.
Proxofim
An experimental D-retro-inverso peptide studied for selective clearance of senescent cells in preclinical models.
Reduced glutathione
A major endogenous antioxidant tripeptide; systemic and intranasal supplementation effects remain inconsistently demonstrated.
Educational and research information only. PepGuide does not sell or prescribe peptides, diagnose conditions, or provide personalized medical advice. Evidence summaries may include early-stage, animal, or limited human research — none of that is a substitute for primary literature or clinician guidance.