science PeptideCodex

Research reference

A scientific reference for research peptides.

Grounded in the Peptide Codex library of 27 peptides, 52 stacks, and 5 guides.

For research use only. Not medical advice. Consult a licensed practitioner.

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For research use only. Nothing on this site is medical advice, a diagnosis, or a treatment recommendation. The compounds discussed are not approved by the FDA for the uses covered. Consult a licensed clinician before any decision affecting human health.

Featured peptides

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AOD-9604
A 16-amino-acid modified fragment of the C-terminus of human growth hormone (residues 176–191) with an added N-terminal tyrosine, characterised as a lipolytic peptide.
BPC-157
A synthetic 15-amino-acid peptide fragment derived from a protein found in gastric juice. Studied extensively in animal models for tissue repair, gut-barrier integrity, and tendon/ligament healing.
CJC-1295 no DAC
The short-acting variant of CJC-1295 — a GHRH(1-29) analog with four amino-acid substitutions for degradation resistance but without the maleimidopropionic-acid moiety that produces albumin binding. Half-life on the order of 30 minutes, in contrast to the DAC version's multi-day exposure.
CJC-1295 with DAC
A growth-hormone-releasing hormone (GHRH) analogue with a maleimide (Drug Affinity Complex) linker that binds serum albumin, extending its circulating half-life to several days.
DSIP
A nonapeptide originally isolated from rabbit brain during electrophysiological sleep-induction experiments; characterised in the sleep, stress, and neuroendocrine research literature.
Epithalon
A synthetic tetrapeptide derived from pineal-gland extract characterised in Russian gerontology research for telomerase-related and geroprotective effects.

Research stacks

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AOD-9604 Adipose-Directed Cut
Fragment-based fat-mobilization protocol using the C-terminal GH fragment AOD-9604.
BPC-157 + CJC-1295 Post-Training Recovery/Growth
GH-axis pulse combined with a tissue-repair peptide for a training-recovery research protocol.
BPC-157 + TB-500 Joint-Load Support Protocol
Tissue-repair peptide pairing used adjunctively during heavy-load strength training.
BPC-157 + TB-500 Tissue Repair Baseline
The most widely referenced soft-tissue repair research protocol.
BPC-157 Post-Surgical Soft-Tissue Protocol
Single-agent BPC-157 protocol used adjunctively during the post-operative soft-tissue window.
CJC + Ipamorelin + BPC-157 Hypertrophy Support Stack
Layered GH-axis pulse with adjunct tissue-repair peptide for a hypertrophy-focused training block.
CJC-1295 (no-DAC) + Ipamorelin Cutting Pulse
GHRH + GHRP pulse protocol used adjunctively during a caloric-deficit research protocol.
CJC-1295 (no-DAC) + Ipamorelin GH Pulse for Lean Mass
Classic GHRH + GHRP pulse protocol used adjunctively during a resistance-training block.
CJC-1295 + Ipamorelin + AOD-9604 Adipose Cut
Layered GH-axis pulse plus adipose-directed fragment for a research cutting protocol.
CJC-1295 + Ipamorelin Power Training Cycle
GH-axis pulse protocol run during a strength-focused training block.
CJC-1295 + Ipamorelin Slow-Wave Sleep Protocol
Pre-bed GHRH + GHRP pulse used for characterized slow-wave sleep effects.
CJC-1295 DAC Sustained GH Elevation Protocol
Long-acting GHRH analog protocol using drug affinity complex (DAC) modification for weekly dosing.
DSIP CNS Recovery / Sleep Depth Protocol
Single-agent DSIP protocol for delta-wave and CNS recovery research.
DSIP Neuromodulation / Stress Response Protocol
Delta Sleep Inducing Peptide protocol for stress-response and neuromodulation research.
Epithalon + NAD+ Combined Longevity Protocol
Pineal-peptide short course paired with NAD+ cellular energy dosing.
Epithalon Circadian / Melatonin Rhythm Protocol
Short-course epithalon protocol used in Khavinson's melatonin-rhythm research.
Epithalon Telomere / Pineal Foundation Protocol
Single-agent epithalon protocol characterized in Khavinson's telomerase and pineal-function studies.
FOXO4-DRI Senolytic Research Protocol
Investigational senolytic peptide protocol targeting p53-FOXO4 interaction in senescent cells.
GHK-Cu + SNAP-8 Topical Skin Stack
Layered topical peptide protocol combining ECM remodeling and expression-line effects.
GHK-Cu Connective Tissue Support Protocol
Copper tripeptide protocol for extracellular matrix and connective-tissue signaling.
GHK-Cu Copper Peptide Skin Protocol
Copper tripeptide protocol for skin and hair matrix research.
GHRH + GHRP Dual-Pulse for Lean Mass (Sermorelin + Ipamorelin)
Classic GHRH + GHRP pairing with the native GHRH(1-29) analog rather than modified GRF.
GLP-1 + Tesamorelin Recomposition Protocol
Combined GLP-1 satiety with GHRH-driven lean-mass preservation during caloric deficit.
Ipamorelin + MOTS-c Endurance Support Stack
GH pulse with a mitochondrial-encoded metabolic peptide for endurance-training research protocols.
KPV Inflammation Modulation Protocol
Alpha-MSH C-terminal tripeptide protocol for anti-inflammatory research.
Melanotan II Pigmentation Research Protocol
Melanocortin agonist protocol characterized for photoprotective pigmentation research.
MOTS-c Mitochondrial Longevity Protocol
Mitochondrial-encoded peptide protocol for AMPK and mitokine signaling research.
MOTS-c Mitochondrial-Directed Metabolic Protocol
Mitochondrial-encoded peptide protocol targeting insulin sensitivity and metabolic flexibility.
MOTS-c Training Adaptation Protocol
AMPK-signaling peptide used adjunctively during a strength-endurance block.
NAD+ Cellular Energy / Longevity Protocol
Intravenous or subcutaneous NAD+ dosing for research on cellular energy metabolism.
PT-141 + Melanotan II Melanocortin Research Stack
Layered melanocortin agonist protocol for arousal and pigmentation research.
PT-141 Melanocortin Sexual Response Protocol
PT-141 (bremelanotide) protocol characterized in the RECONNECT trials.
Retatrutide Triple-Agonist Weight Reduction
Investigational triple GIP/GLP-1/glucagon agonist protocol characterized in the Phase 2 obesity trial.
Selank Anxiolytic Cognitive Baseline Protocol
Intranasal Selank protocol characterized in Russian anxiolytic research.
Semax + Selank Dual Nootropic Protocol
Complementary intranasal peptide pairing for cognitive-focus and anxiolytic effects.
Semax Neurotrophic Focus Protocol
Intranasal Semax protocol for cognitive-focus research based on published Russian neurology literature.
Sermorelin GHRH Baseline Protocol
Single-agent GHRH analog protocol for restoring endogenous GH pulsatility.
Sermorelin Off-Cycle GH-Axis Maintenance
Lower-intensity GHRH analog protocol for off-block maintenance.
SNAP-8 Topical Expression Line Protocol
SNAP-8 (Acetyl Octapeptide-3) topical protocol characterized in cosmetic literature.
SS-31 Mitochondrial Cardiolipin Protocol
SS-31 (elamipretide) protocol for mitochondrial cardiolipin binding and ROS reduction research.
STEP-Style Weight Reduction Foundation (Semaglutide)
Sustained weight reduction using the escalation schedule characterized in the STEP trials.
SURMOUNT Dual-Incretin Weight Reduction (Tirzepatide)
Weight reduction using the GIP/GLP-1 co-agonist escalation characterized in the SURMOUNT trials.
Survodutide GLP-1 / Glucagon Co-Agonist Protocol
Investigational dual GLP-1/glucagon agonist protocol characterized in Phase 2 obesity trials.
TB-500 Tendon and Ligament Protocol
Thymosin Beta-4 fragment protocol used adjunctively for tendon and ligament healing research.
Tesamorelin + MOTS-c Mitochondrial Recomposition
GHRH-driven lean-mass support paired with mitochondrial peptide signaling.
Tesamorelin Heavy-Training GH Axis Support
Continuous GHRH analog dosing during a strength or hypertrophy block.
Tesamorelin Lean-Mass Recomposition Protocol
GHRH-analog protocol repurposed from visceral-fat trials for research-context body-composition change.
Tesamorelin Visceral Adipose Reduction (Falutz Protocol)
Visceral adipose tissue reduction using the GHRH analog tesamorelin at the pivotal-trial dose.
Thymosin Alpha-1 + BPC-157 Immune-Recovery Stack
Immune-support peptide paired with a tissue-repair peptide for recovery research contexts.
Thymosin Alpha-1 Immune Foundation Protocol
Standalone Thymosin Alpha-1 protocol for T-cell function and immune modulation research.
Thymosin Alpha-1 Immune-Support Post-Injury
Thymosin Alpha-1 protocol used adjunctively during recovery from tissue insult.
Tirzepatide + Tesamorelin Recomposition Protocol
Dual-incretin weight reduction paired with GHRH-driven visceral-fat and lean-mass support.

What this site is — and isn't

PeptideCodex is: a structured reference of peptides that appear in the scientific literature. Each profile documents mechanism, published half-life, reported dosing ranges from preclinical work, reconstitution math, and citations.

PeptideCodex is not: a medical resource, a source of treatment protocols, a pharmacy, or a recommendation to use any compound in humans. We do not employ physicians and do not offer medical review of content.

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