πŸ“‹ Pep IQ is an independent research reference platform. All content is for educational purposes only and does not constitute medical advice. Compounds documented are research chemicals β€” not approved for human use by the MHRA or FDA. Always consult a qualified physician before considering any compound. Safety guide β†’
Complete Index

All Compounds

71 compounds documented without an agenda. Click any entry for the full reference β€” mechanism, blood work, safety profile and dosing guidance.

71 compounds Β· 20 protocol references
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Healing & Recovery
BPC-157The most researched peptide in biohacking. Tissue repair, gut healing, tendon, ligament. Oral or SubQ.Entry β†’
TB-500Systemic tissue repair via actin regulation. Pairs with BPC-157 as the Wolverine Stack.Entry β†’
KPVAnti-inflammatory tripeptide from alpha-MSH. Oral gut healing, no injection required.Entry β†’
Arg-BPC-157BPC-157 as arginine salt β€” stable in stomach acid. Best form for oral gut applications.Entry β†’
Thymosin Ξ±-1The most clinically substantiated immune-modulating peptide. Thymic origin, T-cell activation.Entry β†’
ThymulinThymic signal requiring zinc to activate. Immune regulation and anti-inflammatory.Entry β†’
CartalaxKhavinson tripeptide from cartilage tissue. Joint and connective tissue support.Entry β†’
Thymosin Ξ²4 (Full)Full-length TB4 β€” the parent molecule of TB-500. Systemic regeneration and immune support.Entry β†’
Collagen PeptidesThe world's most consumed therapeutic peptide. Skin, joints, tendons, gut lining.Entry β†’
Glow BlendCommunity combination: GHK-Cu + BPC-157 targeting tissue repair and skin quality.Entry β†’
Klow BlendGlow Blend plus KPV β€” adds NF-ΞΊB inhibition for inflammatory conditions.Entry β†’
Metabolic, Weight & GH Axis
GLP-1The receptor class driving the weight loss revolution. Mechanism, pharmacology and comparisons.Entry β†’
SemaglutideOzempic/Wegovy. The benchmark GLP-1 agonist with the strongest clinical data.Entry β†’
TirzepatideMounjaro. Dual GLP-1/GIP agonist β€” superior weight loss to semaglutide in trials.Entry β†’
RetatrutideTriple agonist: GLP-1 + GIP + glucagon. Phase 3 trials showing 24% body weight reduction.Entry β†’
LiraglutideVictoza/Saxenda. The original long-acting GLP-1 agonist. Daily injection protocol.Entry β†’
AOD-9604HGH fragment targeting fat metabolism without IGF-1 elevation or growth effects.Entry β†’
HGH Fragment 176–191C-terminal fragment of growth hormone. Fat mobilisation without glucose effects.Entry β†’
IGF-1Insulin-like Growth Factor 1. Primary mediator of GH's anabolic effects. Liver and peripheral production.Entry β†’
IGF-1 LR3Extended half-life IGF-1 analog (20–30hr vs 15min). Stronger anabolic effect.Entry β†’
SermorelinThe first GH-releasing peptide approved for clinical use. Nightly SubQ, sleep improvement within 2 weeks.Entry β†’
TesamorelinFDA-approved GHRH analog. Most studied for visceral fat reduction. Egrifta.Entry β†’
CJC-1295Long-acting GHRH analog with DAC modification. Weekly dosing, sustained GH pulse.Entry β†’
Ipamorelin / CJC-1295The most common GH stack. Clean GH pulse without cortisol/prolactin. Nightly fasted.Entry β†’
Mod-GRF 1-29CJC-1295 without DAC. Short-acting GHRH β€” 3Γ— daily dosing, mimics natural pulse.Entry β†’
GHRP-2 / GHRP-6Ghrelin mimetics producing strong GH pulse. GHRP-6 causes significant hunger.Entry β†’
HexarelinMost potent GHRP available. Causes desensitisation β€” requires cycling.Entry β†’
MK-677 (Ibutamoren)Oral ghrelin mimetic. Once daily, raises GH and IGF-1. Causes hunger and water retention.Entry β†’
GonadorelinGnRH analog used to preserve LH/FSH signalling during TRT. Prevents testicular atrophy.Entry β†’
AICARAMPK activator β€” exercise mimetic with endurance and metabolic effects. WADA prohibited.Entry β†’
5-Amino-1MQNNMT inhibitor raising NAD+ and activating fat metabolism. Oral small molecule.Entry β†’
MGF / PEG-MGFMechano Growth Factor β€” localised muscle repair splice variant of IGF-1.Entry β†’
FollistatinMyostatin inhibitor with dramatic muscle growth potential. Highly experimental.Entry β†’
Cognitive & Neurological
SemaxRussian ACTH fragment. BDNF upregulation, neuroprotection, focus. Intranasal or SubQ.Entry β†’
N-Acetyl Semax AmidateModified Semax with improved BBB penetration. Considered 2–4Γ— more potent per mcg.Entry β†’
SelankAnxiolytic peptide derived from tuftsin. GABA modulation without addiction potential.Entry β†’
AdamaxSemax derivative with enhanced neuroprotective profile. Synaptic plasticity.Entry β†’
CerebrolysinPorcine-derived neuropeptide complex. Strong evidence in TBI and neurodegeneration.Entry β†’
DihexaHighly potent synaptogenic compound. 7 orders of magnitude more potent than BDNF. Experimental.Entry β†’
DSIPDelta Sleep-Inducing Peptide. Promotes slow-wave sleep, stress modulation.Entry β†’
PinealonKhavinson tripeptide from pineal gland. Cognitive ageing, sleep, neuroprotection.Entry β†’
VIPVasoactive Intestinal Peptide. Neuroprotective, MCAS, POTS, long COVID applications.Entry β†’
PE-22-28TREK-1 channel blocker with rapid antidepressant-like effects in animal models.Entry β†’
SpadinNatural TREK-1 inhibitor derived from sortilin. Antidepressant mechanism, faster onset than SSRIs.Entry β†’
Longevity, Skin & Anti-Ageing
EpitalonTetrapeptide from the pineal gland. Telomerase activator with the most longevity data of any peptide.Entry β†’
GHK-CuCopper peptide with profound wound healing, collagen synthesis, and skin remodelling effects.Entry β†’
FOXO4-DRISenolytic peptide selectively inducing apoptosis in senescent cells. Highly experimental.Entry β†’
NAD+ / NMN / NRThe mitochondrial energy molecule declining 50% by midlife. NMN and NR raise blood NAD+.Entry β†’
Khavinson BioregulatorsOrgan-specific tri- and tetrapeptides developed by Prof. Khavinson. Thymus, pineal, liver, heart.Entry β†’
Klotho-Derived PeptidesFragments from the Klotho longevity protein. Cognitive enhancement, organ protection. Very early stage.Entry β†’
SHLP PeptidesSmall humanin-like peptides encoded in mitochondrial 16S rRNA. Anti-apoptotic, metabolic.Entry β†’
Bremelanotide (PT-141)FDA-approved melanocortin agonist for female sexual dysfunction. Acts centrally on desire.Entry β†’
OxytocinThe bonding peptide. Social trust, anxiety reduction, wound healing, sexual function.Entry β†’
Melanotan IIMelanocyte-stimulating hormone analog. Tanning, libido, appetite suppression. Non-selective.Entry β†’
Melanotan IAfamelanotide β€” more selective MT1 agonist. Licensed for EPP in Europe. Fewer side effects.Entry β†’
Kisspeptin-10Hypothalamic neuropeptide triggering LH/FSH release. Fertility, testosterone restoration.Entry β†’
Mitochondrial Peptides
SS-31 (Elamipretide)Cardiolipin-targeting peptide stabilising inner mitochondrial membrane. Heart failure, ageing.Entry β†’
MOTS-cMitochondrial-encoded peptide activating AMPK. Exercise mimetic, insulin sensitivity, longevity.Entry β†’
HumaninThe first mitochondria-encoded peptide discovered. Neuroprotective, insulin sensitising, anti-apoptotic.Entry β†’
SLU-PP-332ERR agonist β€” exercise mimetic activating mitochondrial biogenesis pathways. Very early stage.Entry β†’
Immune & Inflammatory
LL-37Human cathelicidin β€” the body's own antimicrobial peptide. Wound healing, immune defence.Entry β†’
Thymosin Ξ±-1Thymic peptide with powerful immune-modulating effects. Used in hepatitis, cancer adjunct therapy, and immune senescence. One of the most clinically studied immunopeptides.Entry β†’
CagriSemaCagrilintide + semaglutide combination. Next-generation dual-mechanism weight loss. Phase 3.Entry β†’
AmycretinDual GLP-1 / amylin receptor agonist. Phase 2. Potentially superior to tirzepatide.Entry β†’
Next Generation & Experimental
DihexaExperimental synaptogenic compound β€” among the most potent cognitive enhancers tested. Crosses the blood-brain barrier and may promote new synaptic connections.Entry β†’
FOXO4-DRIExperimental senolytic peptide that selectively clears senescent cells by disrupting the FOXO4-p53 survival signal. Early research in age-related tissue decline.Entry β†’
Klotho-Derived PeptidesFragments of the longevity-associated Klotho protein. Experimental interest in cognitive protection, kidney function, and slowing biological ageing.Entry β†’
SLU-PP-332Experimental exercise mimetic activating ERR nuclear receptors. Early research suggests metabolic and mitochondrial benefits similar to endurance training.Entry β†’
PE-22-28Early-stage experimental peptide targeting TREK-1 potassium channels. Antidepressant mechanism of action distinct from conventional SSRIs. Very limited human data.Entry β†’
SpadinNatural peptide antagonist of TREK-1 channels with antidepressant properties in animal models. Derived from the sortilin propeptide. Human trials pending.Entry β†’
CagriSemaNext-generation combination of cagrilintide (amylin analogue) and semaglutide. Phase 3 trials showing superior weight loss to semaglutide alone.Entry β†’
AmycretinSingle-molecule GLP-1 and amylin receptor co-agonist in early clinical trials. Designed to combine the satiety mechanisms of both hormones in one compound.Entry β†’