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Peptide library

Type a goal or symptom — or pick a category — to find the research peptides most studied for it, how they work, and which verified suppliers sell them. Educational research information, not medical advice.

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BPC
BPC-157Body Protection Compound
🔬 Solid preclinical🛒 144 suppliers
Joint & tendonMuscle & recoveryGut & digestionInflammationBack pain
TB5
TB-500Thymosin Beta-4 fragment
🔬 Preclinical / animal🛒 127 suppliers
Muscle & recoverySkinJoint & tendonInflammationImmune support
GHK
GHK-CuCopper peptide
🔬 Clinical (topical)🛒 126 suppliers
SkinHairInflammationJoint & tendon
CJC
CJC-1295 / IpamorelinGHRH + ghrelin agonist
🔬 Emerging / anecdotal🛒 112 suppliers
Muscle & recoverySleepWeight & fat lossEnergy & longevity
RET
RetatrutideTriple-agonist
🔬 Clinical (Phase 2)🛒 89 suppliers
Weight & fat lossEnergy & longevityGut & digestion
MOT
MOTS-cMitochondrial peptide
🔬 Solid preclinical🛒 89 suppliers
Energy & longevityWeight & fat lossMuscle & recoveryImmune support
NAD
NAD+Coenzyme (NMN/NR)
🔬 Clinical (precursors)🛒 87 suppliers
Energy & longevityMuscle & recoveryFocus & memory
TIR
TirzepatideGLP-1 / GIP agonist
🔬 Strong clinical🛒 77 suppliers
Weight & fat lossGut & digestionEnergy & longevity
SEM
SemaxNootropic peptide
🔬 Clinical (Russia only)🛒 67 suppliers
Focus & memoryMood & anxietyEnergy & longevity
SEL
SelankAnxiolytic peptide
🔬 Preclinical + small clinical🛒 65 suppliers
Mood & anxietyFocus & memoryImmune support
EPI
EpitalonPineal tetrapeptide
🔬 Preclinical (sparse human)🛒 65 suppliers
Energy & longevitySleepSkin
MEL
Melanotan IIMelanocortin agonist
🔬 Preclinical / animal🛒 64 suppliers
SkinLibidoWeight & fat loss
AOD
AOD-9604GH fragment 176-191
🔬 Failed clinical🛒 63 suppliers
Weight & fat loss
TES
TesamorelinGHRH analog
🔬 Clinical🛒 62 suppliers
Weight & fat lossMuscle & recoveryEnergy & longevity
SEM
SemaglutideGLP-1 agonist
🔬 Strong clinical🛒 60 suppliers
Weight & fat lossGut & digestionEnergy & longevity
PT1
PT-141Bremelanotide
🔬 Strong clinical🛒 60 suppliers
LibidoMood & anxiety
KPV
KPVAlpha-MSH tripeptide
🔬 Preclinical / animal🛒 59 suppliers
Gut & digestionInflammationSkinImmune support
DSI
DSIPDelta sleep-inducing peptide
🔬 Emerging / mixed🛒 51 suppliers
SleepMood & anxietyEnergy & longevity
SS3
SS-31Mitochondria-targeting tetrapeptide
🔬 Clinical🛒 45 suppliers
Energy & longevityMuscle & recoveryInflammation
THY
Thymosin Alpha-1Immune modulator
🔬 Strong clinical🛒 42 suppliers
Immune supportInflammationEnergy & longevity
MEL
Melanotan IMC1R-selective photoprotective analog
🔬 Clinical🛒 42 suppliers
Skin
CAG
CagrilintideLong-acting amylin analog
🔬 Clinical🛒 38 suppliers
Weight & fat lossGut & digestion
KIS
KisspeptinReproductive neuropeptide
🔬 Clinical (early)🛒 34 suppliers
LibidoMood & anxietyEnergy & longevity
HGH
HGHRecombinant growth hormone
🔬 Strong clinical🛒 30 suppliers
Muscle & recoveryEnergy & longevityWeight & fat lossJoint & tendon
LL3
LL-37Cathelicidin peptide
🔬 Solid preclinical🛒 25 suppliers
Immune supportSkinInflammation
ADA
AdamaxSemax-derived nootropic analog
🔬 Emerging / anecdotal🛒 3 suppliers
Focus & memoryMood & anxiety
COL
Collagen peptidesHydrolysed collagen
🔬 Clinical (bias-prone)🛒 No listed supplier
SkinJoint & tendonHairMuscle & recoveryBack pain
LAR
LarazotideTight-junction regulator
🔬 Clinical (failed phase 3)🛒 No listed supplier
Gut & digestionInflammation
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