Research peptides
An educational reference for commonly discussed research peptides. Each profile mirrors the supplement format — mechanism, effects, dosing context — but deliberately omits clinical evidence summaries and purchase links. These compounds are not FDA-approved supplements; most lack rigorous human trials.
Informational use only. Peptides listed here are investigational. Many are sold legally only as research chemicals and should never be self-administered without qualified medical supervision.
BPC-157
aka Body Protection Compound-157
A synthetic pentadecapeptide derived from a protective protein in human gastric juice, studied across many tissue-repair models.
TB-500
aka Thymosin Beta-4 fragment
A synthetic fragment of thymosin beta-4 studied for systemic tissue regeneration, vascular growth, and wound closure.
GHK-Cu
aka Copper Tripeptide-1
A naturally occurring copper-binding tripeptide studied for skin remodeling, hair growth, and wound healing.
Ipamorelin
A selective growth-hormone-releasing peptide that produces clean GH pulses without major cortisol or prolactin spikes.
CJC-1295 (no DAC)
aka Mod GRF 1-29
A modified GHRH analog that amplifies natural growth-hormone pulses without sustained suprapulse elevation.
Sermorelin
A 29-amino-acid GHRH analog historically used in pediatric GH-deficiency evaluation and adult anti-aging protocols.
Tesamorelin
A long-acting GHRH analog originally approved for HIV-associated lipodystrophy and visceral fat reduction.
MOTS-c
A mitochondrial-derived peptide that signals systemic metabolic regulation, insulin sensitivity, and exercise capacity.
Epitalon
aka Epithalon
A short tetrapeptide studied in Russia for telomerase activation, sleep regulation, and pineal-gland function.
Selank
A Russian-developed heptapeptide studied for anxiolytic and cognitive-enhancing effects without sedation.
Semax
A Russian-developed heptapeptide derived from ACTH studied for focus, neuroprotection, and stroke recovery.
PT-141
aka Bremelanotide
A melanocortin-receptor agonist studied (and approved in some regions) for sexual dysfunction in both men and women.
Melanotan II
A non-selective melanocortin agonist studied for tanning and libido effects — with a notable side-effect profile.
AOD-9604
A fragment of human growth hormone studied for fat-burning effects without the broader anabolic actions of HGH.
Thymosin Alpha-1
aka Tα1
A 28-amino-acid peptide fragment of prothymosin alpha used in some countries as an immune modulator.
GHRP-2
aka Pralmorelin
Second-generation ghrelin mimetic that drives pulsatile pituitary GH release.
GHRP-6
First-generation ghrelin mimetic that produces a strong appetite signal alongside GH release.
Hexarelin
Potent GHRP with extra cardioprotective signaling via the CD36 receptor.
MK-677
aka Ibutamoren
Orally active ghrelin mimetic that produces sustained GH and IGF-1 elevation.
IGF-1 LR3
aka Long R3 IGF-1
Long-acting IGF-1 analog that resists IGFBP binding for sustained anabolic signaling.
IGF-1 DES
aka DES(1-3) IGF-1
Short-acting IGF-1 analog with high local anabolic potency at injection sites.
MGF
aka Mechano Growth Factor
Splice variant of IGF-1 produced after mechanical load that activates muscle stem cells.
Follistatin-344
Natural myostatin-binding protein that releases the brake on muscle hypertrophy.
Semaglutide
aka Ozempic
Long-acting GLP-1 receptor agonist used for weight loss and glycemic control.
Tirzepatide
aka Mounjaro
Dual GIP and GLP-1 receptor agonist with stronger weight-loss effects than GLP-1 alone.
Liraglutide
aka Victoza
Daily GLP-1 receptor agonist with a shorter half-life than semaglutide.
Retatrutide
aka LY3437943
Investigational triple agonist of GLP-1, GIP, and glucagon receptors with the largest weight-loss signal to date.
Thymosin Beta-4
aka TB-4
Full-length actin-sequestering peptide central to wound healing and angiogenesis — TB-500 is its derivative.
Thymalin
Polypeptide thymic extract studied for immune restoration in aging and chronic infection.
KPV
aka Lys-Pro-Val
C-terminal tripeptide of alpha-MSH with anti-inflammatory effects in gut and skin.
LL-37
aka Cathelicidin
The body's endogenous antimicrobial peptide, with immunomodulatory and wound-healing roles.
Larazotide
aka AT-1001
Tight-junction regulator studied as an adjunct in celiac disease and intestinal permeability.
DSIP
aka Delta Sleep-Inducing Peptide
Nonapeptide originally isolated from sleeping rabbit brain, studied for sleep architecture and HPA stabilization.
Humanin
Mitochondrial-derived peptide with cytoprotective and metabolic signaling roles.
SS-31
aka Elamipretide
Mitochondria-targeted peptide that binds cardiolipin to preserve electron-transport efficiency.
Kisspeptin-10
Decapeptide fragment of kisspeptin that drives GnRH release and gates the reproductive axis.
Gonadorelin
aka GnRH
Synthetic native GnRH used to drive pulsatile pituitary LH/FSH release.
Triptorelin
Long-acting GnRH agonist used to drive a large LH/FSH burst or, with sustained use, suppress them.
Modified GRF(1-29)
aka CJC-1295 no-DAC
Short-acting GHRH analog without the DAC linker, producing pulsatile GH release.
HGH Fragment 176-191
aka AOD analog
C-terminal GH fragment retaining lipolytic activity without GH or IGF-1 effects.
Cerebrolysin
aka FPF-1070
Porcine brain-derived peptide mixture studied in stroke, TBI, and neurodegeneration.
Dihexa
aka N-hexanoic-Tyr-Ile-(6) aminohexanoic amide
Oral angiotensin IV analog with potent synaptogenic effects in preclinical models.
P21
aka Cdk5 activator-derived peptide
CNTF-derived peptide reported to promote neurogenesis in preclinical work.
N-Acetyl Semax
aka NA-Semax
Acetylated Semax variant with extended half-life and stronger BDNF effects.
N-Acetyl Selank
aka NA-Selank
Acetylated Selank variant with extended anxiolytic and immunomodulatory activity.
Argireline
aka Acetyl Hexapeptide-3
Topical hexapeptide marketed as a 'Botox-like' expression-line softener.
SNAP-8
aka Acetyl Octapeptide-3
Extended SNAP-25 mimetic used in anti-wrinkle topical formulations.
Matrixyl 3000
aka Palmitoyl Tripeptide-1 + Palmitoyl Tetrapeptide-7
Topical peptide blend that signals fibroblasts to produce collagen and ECM proteins.
Pinealon
aka Glu-Asp-Arg
Russian pineal-derived tripeptide bioregulator studied for neuroprotection and cognitive aging.
Thymogen
aka Glu-Trp
Thymus-derived dipeptide bioregulator used as an immune modulator.
Cagrilintide
aka AM833
Long-acting amylin analog studied in combination with semaglutide for weight loss.
Survodutide
aka BI 456906
Dual GLP-1 / glucagon receptor agonist studied for obesity and MASH.
Relamorelin
aka RM-131
Ghrelin receptor agonist studied for diabetic gastroparesis and motility disorders.
Anamorelin
aka ONO-7643
Oral ghrelin agonist developed for cancer-related cachexia and appetite loss.
Macimorelin
aka Macrilen
Oral ghrelin agonist used as a diagnostic test for adult GH deficiency.
Nafarelin
aka Synarel
Intranasal GnRH agonist used in endometriosis and central precocious puberty.
Cetrorelix
aka Cetrotide
GnRH receptor antagonist used to prevent premature ovulation in IVF cycles.
Ganirelix
aka Antagon
Another GnRH antagonist used to suppress the LH surge in assisted reproduction.
Leuprolide
aka Lupron
Long-acting GnRH agonist used in prostate cancer, endometriosis, and precocious puberty.
Melanotan I
aka Afamelanotide
α-MSH analog approved for erythropoietic protoporphyria to promote photoprotective pigmentation.
Adipotide
aka FTPP
Pro-apoptotic peptide that targets the vasculature of white adipose tissue in preclinical work.