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Last reviewed: May 27, 2026 · PeptiDex Editorial Team
© 2026 PeptiDex. All rights reserved.
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Home/Library
§ The Library

51 research
peptides, indexed.

Every compound is categorized by mechanism of action and graded by the strength of available clinical evidence. Filter, search, or browse the full catalog.

51 compounds
38 mechanism classes
668+ studies indexed
5 FDA-approved
51 shown
Evidence:
§ Trending in 2026

The peptides researchers are talking about.

Trending
Mitochondrial Peptide

MOTS-c

Energy, metabolism, fat loss, longevity

→
FDATrending
Melanocortin Agonist

PT-141

Sexual arousal, libido

→
Trending
Triple Agonist (GLP-1/GIP/Glucagon)

Retatrutide

Superior body recomposition, massive fat loss, metabolic health

→
Trending
Mitochondrial Peptide

SS-31

Energy, recovery, neuroprotection

→
Trending
Small Molecule

Tesofensine

Extreme fat loss and appetite suppression without GLP-1 side effects

→

Peptide Blends

10popular combinations — BPC/TB-500, CJC/Ipa & more

§ Full Index — A to Z
GH Fragment

AOD-9604

  • Fat loss without GH side effects
Moderate→
Body Protective Compound

BPC-157

  • Injury recovery
  • gut healing
  • tissue repair
  • reduced inflammation
Preclinical→
Metabolic

Cagrilintide

  • Weight loss
  • appetite reduction
  • glycemic control
Very Strong→
GHRH Analog

CJC-1295

  • Muscle growth
  • fat loss
  • recovery
Moderate→
Sleep Peptide

DSIP

  • Improved sleep quality
  • stress reduction
Very Strong→
Telomerase Activator

Epitalon

  • Anti-aging
  • longevity
  • sleep
Strong→
Myostatin Inhibitor

Follistatin-344

  • Muscle hypertrophy
  • strength
Moderate→
Copper Peptide

GHK-Cu

  • Skin repair
  • anti-aging
  • wound healing
Moderate→
GHRP

GHRP-2

  • Strongest GH release of standard GHRPs
  • muscle growth
  • anti-aging
  • recovery
Strong→
GHRP

GHRP-6

  • Potent GH release
  • appetite stimulation
  • muscle growth
  • recovery
  • gastric motility
Moderate→
Antioxidant

Glutathione

  • Detoxification
  • antioxidant defense
  • immune support
  • skin brightening
Strong→
GHRP

Hexarelin

  • Most potent GH release of any GHRP
  • cardioprotection
  • muscle growth
  • recovery
Moderate→
Growth Factor

IGF-1 LR3

  • Muscle growth
  • recovery
  • hyperplasia
Moderate→
GHRP

Ipamorelin

  • GH release
  • muscle growth
  • recovery without cortisol spike
Moderate→
Reproductive Peptide

Kisspeptin-10

  • LH/FSH stimulation
  • testosterone support
  • fertility enhancement
  • HPG axis activation
Very Strong→
Anti-Inflammatory

KPV

  • Gut/injury healing
  • inflammation reduction
Very Strong→
Antimicrobial Peptide

LL-37

  • Broad-spectrum antimicrobial
  • anti-biofilm
  • wound healing
  • immune modulation
  • anti-inflammatory
Moderate→
Melanocortin Agonist

Melanotan II

  • Tanning
  • libido enhancement
Moderate→
GH Secretagogue (Oral)

MK-677

  • Sustained GH/IGF-1 elevation
  • muscle growth
  • improved sleep
  • bone density
  • oral dosing convenience
Strong→
Mitochondrial Peptide

MOTS-c

  • Energy
  • metabolism
  • fat loss
  • longevity
Moderate→
Longevity

NAD+

  • Cellular energy
  • DNA repair
  • longevity
Strong→
Melanocortin Agonist
FDA

PT-141

  • Sexual arousal
  • libido
Very Strong→
Triple Agonist (GLP-1/GIP/Glucagon)

Retatrutide

  • Superior body recomposition
  • massive fat loss
  • metabolic health
Strong→
Anxiolytic Peptide

Selank

  • Anxiety reduction
  • mental clarity
  • mood
Moderate→
GLP-1 Agonist
FDA

Semaglutide

  • Fat loss
  • appetite control
  • cardiovascular benefits
Very Strong→
Cognitive Peptide

Semax

  • Mental clarity
  • focus
  • neuroprotection
Moderate→
GHRH Analog

Sermorelin

  • Muscle growth
  • recovery
  • sleep
  • anti-aging
Strong→
Mitochondrial Peptide

SS-31

  • Energy
  • recovery
  • neuroprotection
Moderate→
Thymosin Beta-4 Fragment

TB-500

  • Muscle/tissue repair
  • flexibility
  • injury recovery
Moderate→
GHRH Analog
FDA

Tesamorelin

  • Visceral fat reduction
  • body recomposition
Very Strong→
Immune Peptide

Thymosin Alpha-1

  • Immune support
  • antiviral
  • recovery
Strong→
Dual Agonist (GLP-1/GIP)
FDA

Tirzepatide

  • Weight loss
  • body recomposition
  • glycemic control
Very Strong→
Small Molecule

Tesofensine

  • Extreme fat loss and appetite suppression without GLP-1 side effects
Strong→
Cosmetic Peptide

Argireline

  • Topical wrinkle reduction
  • SNAP-25 inhibition
  • muscle relaxation (neurocosmetic)
Moderate→
NNMT Inhibitor

5-Amino-1MQ

  • Fat loss
  • NAD+ preservation
  • metabolic optimization
  • muscle protection
Preclinical→
EPO Receptor Agonist

ARA-290

  • Neuropathic pain relief
  • small fiber neuropathy
  • anti-inflammation
  • tissue protection
Moderate→
GnRH Analog
FDA

Gonadorelin

  • LH/FSH stimulation
  • testosterone preservation
  • HPG axis support during TRT
  • fertility support
Strong→
Zonulin Antagonist

Larazotide

  • Gut barrier repair
  • tight junction integrity
  • celiac disease symptom reduction
  • leaky gut
Strong→
Neuropeptide

VIP

  • Systemic anti-inflammation
  • CIRS/mold illness treatment
  • pulmonary vasodilation
  • immune modulation
Preclinical→
Neuropeptide

Oxytocin

  • Social bonding
  • anxiety reduction
  • gut motility
  • anti-inflammation
  • libido
  • trust and empathy
Moderate→
Thymic Peptide

Thymalin

  • Immune restoration
  • longevity
  • thymic function support
  • T-cell maturation
Emerging→
Mitochondrial Peptide

Humanin

  • Neuroprotection
  • anti-apoptosis
  • insulin sensitization
  • longevity
  • Alzheimer's protection
Preclinical→
Nootropic Peptide

PE-22-28

  • Antidepressant
  • neuroplasticity
  • TREK-1 channel blockade
  • fast-acting mood elevation
Preclinical→
Khavinson Peptide

Pinealon

  • Neuroprotection
  • cognitive enhancement
  • antioxidant
  • circadian rhythm support
Preclinical→
Khavinson Peptide

Cortagen

  • Neuroregeneration
  • peripheral nerve repair
  • cardiac protection
  • anti-aging
Preclinical→
Neurotropic Peptide

Dihexa

  • Synaptogenesis
  • memory enhancement
  • cognitive repair
  • angiotensin IV activity
Preclinical→
Senolytic Peptide

FOXO4-DRI

  • Senescent cell elimination (senolytics)
  • longevity
  • tissue rejuvenation
  • SASP reduction
Preclinical→
Anti-Aging Protein

Klotho

  • Cognitive aging reversal
  • kidney protection
  • cardiovascular protection
  • longevity
  • FGF23 regulation
Preclinical→
Cosmetic Peptide

OS-01

  • Skin cellular age reversal
  • senescent skin cell clearance
  • photoaging repair
  • epidermal renewal
Moderate→
Nootropic Peptide

Synapsin

  • Cognitive enhancement
  • neuroprotection
  • mitochondrial function
  • synaptic plasticity
Preclinical→
Neurotropic Peptide

FGL Loop

  • Synaptogenesis
  • memory enhancement
  • NCAM-mediated neuroprotection
Preclinical→
§ About the Directory

This comprehensive library indexes synthetic amino acid sequences specifically formulated for in-vitro laboratory research. It aggregates pharmacokinetic data, half-life degradation metrics, and clinical trial outcomes for educational referencing. None of the listed compounds are FDA approved for human therapeutic consumption unless explicitly labeled. Always verify chemical purity via rigorous third-party HPLC/MS Certificates of Analysis prior to experimental utilization.

⚠ Educational only · Not medical advice · Most peptides are research-only / not FDA-approved