Peptide Reference Library
For research and educational reference only. PreppinPeppers sells laboratory hardware and materials (reconstitution pens, cartridges, and bacteriostatic water); it does not sell peptides or any substance for consumption. All content on this site, including the reference library and calculators and all reconstitution, dilution, blending, and stacking material, is educational only. It is not medical, health, veterinary, dosing, or compounding advice, has not been evaluated by the FDA, and is not intended to diagnose, treat, cure, or prevent any condition, or for human or animal use. Status labels are general research and can change; verify current FDA and WADA status independently. You are solely responsible for complying with the laws and regulations that apply where you live. Consult a licensed professional before making any health decision.
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StatusFDA-ApprovedInvestigationalResearch-OnlySport-Banned (WADA)
Effect areaWeight & MetabolicMuscle & GrowthHealing & RecoveryCognitive & FocusLongevity & Anti-AgingSkin & CosmeticSexual HealthImmune & InflammationSleep & Mood
Research topics are aggregated MeSH subject headings from the published literature indexed for each compound. They describe what the research covers, not what the compound does, and are not claims about effects.
Research Basics 3
Common Reconstitution Mistakes to AvoidA plain-language reference covering the handling and math errors that most often compromise a reconstituted research vial, from solvent choice to labeling.How Reconstitution WorksWhat reconstitution is, the simple math behind concentration and draw volume, and the handling steps that keep a solution clean and accurate.What Is Reconstitution?A plain-language reference explaining reconstitution, the concentration formula, common diluents, and storage considerations for freeze-dried research materials.
Storage & Handling 5
Cold Chain BasicsAn educational reference on moving refrigerated vials while keeping them within a stable cool range and avoiding both heat and accidental freezing.How Long Does a Reconstituted Vial Last?A reference overview of the general refrigerated shelf-life window for a reconstituted vial, when the clock starts, and the storage factors that affect it.Signs a Reconstituted Vial Has Gone BadA reference guide to the visual and physical cues, such as cloudiness, color change, and particulates, that indicate a reconstituted research vial should be set aside.Sterile Technique for Handling VialsA plain-language reference on aseptic handling of laboratory vials, covering clean work surfaces, wiping stoppers with alcohol, single-use swabs, and avoiding contact with the stopper or needle.Storage GuideA plain-language reference on how lyophilized and reconstituted research peptides are stored across refrigerator and freezer temperatures, with notes on light exposure and freeze-thaw handling.
Equipment & Consumables 3
Insulin Syringe Sizes and Gauges ExplainedA plain-language reference to insulin syringe barrel volumes, needle gauge and length, and what the U-100 marking means.Sharps and Vial Disposal BasicsA plain-language reference on sharps containers, why needles are not recapped, and how used vials and sharps are safely contained and disposed.U-100 vs U-40 SyringesA reference explainer covering what the U-100 and U-40 scales mean, the units-per-milliliter behind each, and why reading the wrong scale produces measuring errors.
Reference & Definitions 3
Peptide Research GlossaryA plain-language glossary defining common peptide research terms, including reconstitution, lyophilized, concentration, U-100, bacteriostatic water, aliquot, diluent, and the units mcg, mg, and IU.What Does Lyophilized Mean?A plain-language reference explaining lyophilization (freeze-drying), why research materials are supplied as a dry cake, and what happens chemically when that cake is reconstituted.What Is a Peptide?A plain-language reference explaining what a peptide is, how peptide bonds link amino acids, and how peptides are distinguished from proteins by chain length.
FDA-Approved & Specific-Use 13
EPOFDABannedEPO (erythropoietin) is a glycoprotein hormone and erythropoiesis-stimulating agent, grouped as a hematopoietic growth factor, and it is an FDA-approved prescription biologic that is prohibited at all times in sport by WADA.Research topicsAnemia · Erythropoiesis · Gene Expression Regulation · KidneyGonadorelinFDABannedGonadorelin is a synthetic decapeptide identical to gonadotropin-releasing hormone (GnRH) in the reproductive/endocrine peptide category; no gonadorelin product is currently FDA-approved and marketed in the United States, so it is handled as a research-only or compounded-only compound.Research topicsProstatic Neoplasms · Neurons · Hypothalamus · Breast NeoplasmsHCGFDABannedHCG (human chorionic gonadotropin) is a glycoprotein gonadotropin hormone in the reproductive and endocrine research category, FDA-approved for specific reproductive and endocrine indications.Research topicsPregnancy · Pregnancy Complications · Placenta · Cell ProliferationHMG (Menotropins)FDABannedHMG (menotropins) is a urine-derived gonadotropin preparation combining FSH and LH activity, grouped in the reproductive and fertility research category, and FDA-approved as a prescription product for specific ovulation-related indications.Research topicsOvulation Induction · Pregnancy · Fertilization in Vitro · Infertility, FemaleHyaluronic acidFDAHyaluronic acid is a glycosaminoglycan, not a peptide. It is FDA-approved in specific device forms including dermal fillers, joint viscosupplements and ophthalmic products.Research topicsSignal Transduction · Wound Healing · Cell Movement · Extracellular MatrixLiraglutideFDALiraglutide is an acylated glucagon-like peptide-1 (GLP-1) receptor agonist in the metabolic and weight-regulation category, and it is FDA-approved for specific indications.Research topicsDiabetes Mellitus, Type 2 · Obesity · Weight Loss · Body WeightMelanotan IFDABannedMelanotan I (afamelanotide) is a synthetic melanocortin-1 receptor (MC1R) agonist peptide grouped with skin, pigment, and photoprotection research compounds, and it is FDA-approved for a specific indication (phototoxicity in erythropoietic protoporphyria).Research topicsProtoporphyria, Erythropoietic · Vitiligo · Dermatitis, Phototoxic · PhototherapyOxytocinFDAOxytocin is a nine-amino-acid peptide hormone that is FDA-approved as a uterotonic for specific obstetric indications, is also studied in the context of social and behavioral neuroscience, and is not specifically listed on the WADA Prohibited List.Research topicsSocial Behavior · Brain · Object Attachment · PregnancyPT-141 (Bremelanotide)FDAPT-141 (bremelanotide) is a synthetic melanocortin receptor agonist peptide grouped with reproductive and sexual-health compounds, and it holds a narrow FDA approval for one specific indication.Research topicsErectile Dysfunction · Penile Erection · Diabetes Mellitus, Type 2 · Endocrine System DiseasesSemaglutideFDASemaglutide is a GLP-1 receptor agonist peptide grouped under metabolic and weight-regulation research, and it is FDA-approved for specific indications including type 2 diabetes and chronic weight management.Research topicsDiabetes Mellitus, Type 2 · Obesity · Weight Loss · Cardiovascular DiseasesTeriparatideFDABannedTeriparatide is a recombinant parathyroid hormone fragment (PTH 1-34) in the osteoanabolic bone-formation class, and it is FDA-approved for a specific osteoporosis indication.Research topicsOsteoporosis · Bone Density · Osteoporosis, Postmenopausal · Spinal FusionTesamorelinFDABannedTesamorelin is a stabilized synthetic analog of growth-hormone-releasing factor (a growth-hormone secretagogue) studied in the context of metabolic and visceral-fat research, and it is FDA-approved for a specific HIV-associated indication.Research topicsHIV-Associated Lipodystrophy Syndrome · Intra-Abdominal Fat · Lipodystrophy · Abdominal FatTirzepatideFDATirzepatide is a synthetic dual GIP and GLP-1 receptor agonist peptide grouped under metabolic and weight-regulation research, and it is FDA-approved for specific indications.Research topicsDiabetes Mellitus, Type 2 · Obesity · Weight Loss · Cardiovascular Diseases
Investigational Compounds 13
ACE-031InvestigationalBannedACE-031 (ramatercept) is an investigational activin receptor type IIB (ActRIIB) Fc-fusion protein studied in the context of muscle mass regulation, and it is research-only and not FDA-approved.Research topicsMuscle, Skeletal · Body Weight · Signal Transduction · Bone DensityAdipotideInvestigationalAdipotide (FTPP) is a synthetic proapoptotic peptidomimetic studied in obesity research; it is not FDA-approved, and its clinical development was discontinued after dose-limiting kidney toxicity.AICARInvestigationalBannedAICAR is an AMP-mimetic nucleoside and AMPK activator, not a peptide. It is PROHIBITED at all times under WADA S4.5 and has been since 2009.Research topicsEnzyme Activation · Signal Transduction · Phosphorylation · LiverAmycretinInvestigationalBannedAmycretin is a unimolecular GLP-1 and amylin receptor agonist studied in the context of metabolic and weight regulation, and it is investigational and not FDA-approved.Research topicsObesity · Diabetes Mellitus, Type 2 · Overweight · Weight LossARA-290InvestigationalARA-290 (cibinetide) is an 11-amino-acid erythropoietin-derived peptide studied in the context of tissue repair and inflammation, and it is not FDA-approved for any indication.Research topicsSarcoidosis · Islets of Langerhans Transplantation · Neuralgia · ApoptosisCagrilintideInvestigationalCagrilintide is a long-acting amylin analog peptide grouped under metabolic and weight-regulation research, and it is investigational and not FDA-approved for any indication.Research topicsObesity · Diabetes Mellitus, Type 2 · Weight Loss · OverweightEcnoglutideInvestigationalEcnoglutide is an investigational cAMP-biased GLP-1 receptor agonist peptide grouped under metabolic and weight regulation research, and it is not FDA-approved in the United States.Research topicsDiabetes Mellitus, Type 2 · Obesity · Overweight · Weight LossMazdutideInvestigationalMazdutide is a synthetic oxyntomodulin-based dual GLP-1/glucagon receptor agonist peptide grouped under metabolic and weight regulation, approved in China for obesity but not FDA-approved and treated as investigational elsewhere.Research topicsObesity · Diabetes Mellitus, Type 2 · Weight Loss · OverweightPemvidutideInvestigationalPemvidutide is an investigational, lipidated GLP-1 and glucagon dual receptor agonist peptide studied in the context of metabolic and weight regulation and liver fat, and it is not FDA-approved.Research topicsFatty Liver · Diabetes Mellitus, Type 2 · Obesity · Non-alcoholic Fatty Liver DiseaseRetatrutideInvestigationalBannedRetatrutide is a synthetic single-molecule triple agonist peptide (GIP, GLP-1, and glucagon receptors) studied in the metabolic and weight-regulation category, and it is investigational and not FDA-approved.Research topicsObesity · Diabetes Mellitus, Type 2 · Weight Loss · Fatty LiverSS-31 (Elamipretide)InvestigationalSS-31 (elamipretide) is a mitochondria-targeting tetrapeptide grouped with cellular energy and mitochondrial-function research compounds, now FDA-approved for one rare indication (Barth syndrome) while remaining investigational for all other uses.Research topicsMitochondria · Oxidative Stress · Apoptosis · Mitochondria, HeartSurvodutideInvestigationalSurvodutide is an investigational glucagon receptor and GLP-1 receptor dual agonist peptide studied in the metabolic and weight-regulation category, and it is not FDA approved.Research topicsObesity · Diabetes Mellitus, Type 2 · Weight Loss · Fatty LiverVK2735InvestigationalVK2735 is an investigational dual GLP-1 and GIP receptor agonist peptide grouped in the metabolic and weight-regulation research category, and it is not FDA-approved for any indication.Research topicsAnti-Obesity Agents · Glucagon-Like Peptide-1 Receptor Agonists · Obesity · Receptors, Gastrointestinal Hormone
Research-Only / Not FDA-Approved 61
5-Amino-1MQResearch5-Amino-1MQ is a synthetic small-molecule NNMT inhibitor grouped with metabolic and weight-regulation research compounds, and it is research-only and not FDA-approved.Research topicsOvarian Neoplasms · Tumor Microenvironment · Obesity · Diabetes Mellitus, Type 2AdamaxResearchAdamax is a synthetic Semax-derived melanocortin peptide grouped in the cognitive and neuromodulatory research category, and it is a research-only compound that is not FDA-approved.Research topicsNeural Networks, Computer · Deep Learning · Machine Learning · Brain NeoplasmsAHK-CuResearchAHK-Cu is a copper-binding tripeptide (alanine-histidine-lysine) studied in hair follicle and skin research; it is research-only and not FDA-approved for human use.Research topicsHair · Menkes Kinky Hair Syndrome · Cell Proliferation · SkinAOD-9604ResearchBannedAOD-9604 is a synthetic fragment of the human growth hormone C-terminus, grouped in metabolic and weight-regulation research, and it is not approved as a drug by any major regulatory authority.Research topicsObesity · Athletic Injuries · Athletic Performance · Energy MetabolismBPC-157ResearchBannedBPC-157 is a synthetic 15-amino-acid peptide grouped with healing and tissue-repair research compounds, and it is research-only and not approved by any drug regulatory agency for human use.Research topicsWound Healing · Gastrointestinal Tract · Athletic Injuries · Athletic PerformanceBronchogenResearchBronchogen is a synthetic short-peptide (tetrapeptide) bioregulator of the Khavinson family, grouped with the bronchopulmonary tissue bioregulators, that is not FDA-approved and is handled as a research-only material.Research topicsLung · Bronchoalveolar Lavage Fluid · Cysts · Genes, PlantCardiogenResearchCardiogen is a short synthetic peptide of the Khavinson bioregulator family, grouped as a heart or cardiovascular tissue bioregulator, and it is research-only and not FDA-approved.Research topicsAmyloid Neuropathies, Familial · Cardiomyopathies · Heart Failure · AmyloidosisCartalaxResearchCartalax is a synthetic short-chain peptide of the Khavinson bioregulator family, grouped with cartilage and connective-tissue peptides, and it is a research-only compound that is not FDA-approved.Research topicsCell Proliferation · Apoptosis · Cell Differentiation · Cellular SenescenceCerebrolysinResearchCerebrolysin is a porcine brain-derived mixture of low-molecular-weight neuropeptides and free amino acids, grouped in the cognitive and neuroprotective research category, and it is not FDA-approved in the United States.Research topicsStroke · Ischemic Stroke · Alzheimer Disease · Brain Injuries, TraumaticChonlutenResearchChonluten is a synthetic short-peptide (tripeptide) Khavinson-type bioregulator studied in respiratory-tissue research contexts and is not FDA-approved, remaining a research-only material.Research topicsLipopolysaccharides · MonocytesCJC-1295ResearchBannedCJC-1295 is a synthetic long-acting analog of growth-hormone-releasing hormone (GHRH), grouped as a growth-hormone secretagogue, that is not FDA-approved and is sold only as a research-use-only laboratory chemical.Research topicsPuberty, Precocious · Body Height · Child, Preschool · ElectroencephalographyCortagenResearchCortagen is a synthetic brain-cortex tetrapeptide in the Khavinson bioregulator family, grouped under neural and anti-aging bioregulator research, and it is not FDA-approved (research-only).Research topicsCerebral Cortex · Brain · Cell Division · Gene ExpressionCrystagenResearchCrystagen is a short synthetic peptide (a Glu-Asp-Pro tripeptide) of the Khavinson bioregulator family, grouped as an immune bioregulator and offered on a research-only, non-FDA-approved basis.Research topicsThymus Gland · Pineal Gland · Cell Differentiation · Cell DivisionDermorphinResearchBannedDermorphin is a naturally occurring opioid heptapeptide from amphibian skin, grouped with analgesic and opioid-receptor research peptides, and it is not FDA-approved (research-only).Research topicsBrain · Binding, Competitive · Pain · Muscle, SmoothDSIP (Delta Sleep-Inducing Peptide)ResearchDSIP is a naturally occurring nine-amino-acid neuropeptide grouped with sleep-regulating and neuroendocrine research compounds, and it is research-only and not approved by the FDA for any human indication.Research topicsSleep · Brain · Circadian Rhythm · Sleep StagesEpitalonResearchEpitalon is a synthetic pineal-derived tetrapeptide of the Khavinson bioregulator family, grouped under anti-aging and longevity research, and is not FDA-approved and handled as a research-only compound.Research topicsPineal Gland · Light · Circadian Rhythm · NeuronsFollistatinResearchBannedFollistatin is a secreted glycoprotein of the myostatin and TGF-beta binding family, grouped in muscle and metabolic research, and is a research-only compound that is not FDA-approved.Research topicsKidney · Pregnancy · Regeneration · InflammationFOXO4-DRIResearchBannedFOXO4-DRI is a synthetic D-retro-inverso peptide studied in the anti-aging and longevity research category, and it is research-only and not FDA-approved.Research topicsCellular Senescence · Apoptosis · Fibroblasts · Pulmonary FibrosisGDF-8 (Myostatin)ResearchBannedGDF-8, also called myostatin, is a TGF-beta superfamily growth factor grouped under metabolic and muscle-regulation research, and it is research-only and not FDA-approved.Research topicsMuscle, Skeletal · Signal Transduction · Muscular Atrophy · Muscular DiseasesGHK-CuResearchGHK-Cu is a copper-bound tripeptide (copper-peptide family) grouped in the healing, tissue-repair and skin research category, and it is research-only and not FDA-approved for any injectable indication.Research topicsWound Healing · Inflammation · Oxidative Stress · FibroblastsGHRP-2ResearchBannedGHRP-2 (pralmorelin) is a synthetic hexapeptide growth hormone secretagogue studied in the context of growth hormone release, and it is research-only and not FDA-approved in the United States.Research topicsPituitary Gland · Pituitary Neoplasms · Body Composition · Body WeightGHRP-6ResearchBannedGHRP-6 is a synthetic hexapeptide growth-hormone secretagogue studied in preclinical research settings, and it is not FDA-approved and is prohibited in sport under the WADA Prohibited List.Research topicsSignal Transduction · Eating · Obesity · InflammationGlutathioneResearchGlutathione is an endogenous tripeptide antioxidant (glutamate-cysteine-glycine). Oral forms are sold as dietary supplements; injectable glutathione is not FDA-approved for the uses it is often marketed for.Research topicsOxidative Stress · Neoplasms · Oxidation-Reduction · MitochondriaHexarelinResearchBannedHexarelin is a synthetic hexapeptide of the growth hormone secretagogue class (a ghrelin-receptor agonist) that is not FDA-approved for any indication and is prohibited in sport under the WADA Prohibited List.Research topicsHepatocytesHumaninResearchHumanin is a mitochondrial-derived peptide studied in longevity, metabolic, and neuroprotection research contexts, and it is not FDA-approved for any indication.Research topicsMitochondria · Oxidative Stress · Signal Transduction · ApoptosisIGF-1 LR3ResearchBannedIGF-1 LR3 is a long-acting synthetic analog of insulin-like growth factor 1, a growth factor studied in cellular and tissue research, and it is a research-only compound that is not FDA-approved.Research topicsFetus · Pregnancy · Alzheimer Disease · Cerebral CortexIGF-DESResearchBannedIGF-DES is a truncated analog of insulin-like growth factor 1 (IGF-1) in the peptide hormones and growth factors family, studied only in preclinical growth-factor and cell-proliferation research, and it is not FDA-approved.Research topicsBinding, Competitive · Cell Division · Body Weight · Cell DifferentiationIpamorelinResearchBannedIpamorelin is a synthetic pentapeptide growth hormone secretagogue (a ghrelin receptor agonist) that is not FDA-approved for any indication and is prohibited in sport under the WADA Prohibited List.Research topicsPituitary Gland · Signal Transduction · Body Weight · EatingKisspeptinResearchBannedKisspeptin is a KISS1-derived neuropeptide family in the reproductive and neuroendocrine research category, and it is research-only and not FDA-approved.Research topicsReproduction · Neurons · Hypothalamus · Polycystic Ovary SyndromeKPVResearchKPV is a synthetic melanocortin-derived tripeptide studied mainly in inflammation and immune research, and it is a research-only compound that is not approved by the FDA for human use.Research topicsColitis, Ulcerative · Inflammation · Nanoparticles · ColitisLivagenResearchLivagen is a synthetic short-peptide (Khavinson-class) bioregulator, the tetrapeptide Lys-Glu-Asp-Ala, grouped under anti-aging and liver-focused tissue bioregulators and sold as a research-only compound that is not FDA-approved.Research topicsLymphocytes · Age Factors · Liver · Chromosome AberrationsLL-37ResearchLL-37 is a human cathelicidin-family antimicrobial peptide grouped under immune and host-defense research, and it is a research-only compound that is not FDA-approved for exogenous therapeutic use.Research topicsImmunity, Innate · Signal Transduction · Cell Movement · ColonMatrixylResearchMatrixyl is a trade name for palmitoyl signal peptides (matrikines) used as topical cosmetic actives, studied in the skin and anti-aging category, and regulated as a cosmetic ingredient rather than an FDA-approved drug.Research topicsSkin Aging · Skin · Fibroblasts · Drug Delivery SystemsMelanotan IIResearchBannedMelanotan II is a synthetic cyclic peptide analog of alpha-melanocyte-stimulating hormone, grouped with skin and cosmetic research compounds, and it is research-only and not FDA-approved.Research topicsEating · Skin Pigmentation · Penile Erection · Skin NeoplasmsMelatoninResearchMelatonin is an indoleamine hormone produced by the pineal gland, not a peptide. In the United States it is sold as a dietary supplement rather than an approved drug.Research topicsCircadian Rhythm · Pineal Gland · Oxidative Stress · Gastrointestinal MicrobiomeMGF (Mechano Growth Factor)ResearchBannedMGF is a synthetic splice variant of IGF-1 (IGF-1Ec) in the growth-factor family, studied in the context of muscle repair and satellite-cell activation, and it is a research-only compound not approved by the FDA for any human use.Research topicsCell Differentiation · Cell Proliferation · Muscle, Skeletal · Cell MovementMK-677 (Ibutamoren)ResearchBannedMK-677 (Ibutamoren) is a non-peptide, orally active small molecule in the growth-hormone secretagogue / ghrelin-mimetic class, studied within metabolic and growth-hormone-axis research, and it is not FDA-approved (research-only).Research topicsObesity · Body Composition · Adipose Tissue · Allosteric RegulationMOTS-cResearchBannedMOTS-c is a 16-amino-acid mitochondrial-derived peptide grouped with metabolic and mitochondrial-function research compounds, not FDA-approved for any indication and prohibited under the WADA Prohibited List as an AMPK activator.Research topicsMitochondria · Muscle, Skeletal · Signal Transduction · Diabetes Mellitus, Type 2N-Acetyl Epitalon AmidateResearchN-Acetyl Epitalon Amidate is a terminally modified synthetic tetrapeptide of the Khavinson bioregulator family, grouped with anti-aging and longevity peptides, and it is a research-only compound that is not FDA-approved.NAD+ (Nicotinamide Adenine Dinucleotide)ResearchNAD+ is a naturally occurring pyridine-nucleotide coenzyme grouped with metabolic and anti-aging or longevity research compounds, and its injectable form is research-only and not FDA-approved as a drug.Research topicsMitochondria · Oxidation-Reduction · Energy Metabolism · Epigenesis, GeneticOvagenResearchOvagen is a synthetic short-chain peptide of the Khavinson bioregulator family, grouped under liver and gastrointestinal tissue bioregulators, and it is a research-only compound that is not FDA-approved.Research topicsKidney · Ovarian Follicle · Superovulation · Ovulation InductionP21ResearchP21 (P021) is a synthetic CNTF-derived neurogenic peptide studied in cognitive and neurological research contexts, and it is a research-only compound that is not FDA-approved.PancragenResearchPancragen is a synthetic short-chain peptide of the Khavinson bioregulator family, grouped with metabolic and endocrine research peptides, and is a research-only compound that is not FDA-approved.Research topicsPancreas · Insulin Resistance · Cell Differentiation · Cellular SenescencePE-22-28ResearchPE-22-28 is a short synthetic spadin-derived peptide and TREK-1 potassium channel blocker studied in the neuroscience and mood-research category, and it is a research-only compound that is not FDA-approved.Research topicsMembrane Potentials · Neurons · Ion Channel Gating · Action PotentialsPEG-MGFResearchBannedPEG-MGF is a pegylated peptide derivative of Mechano Growth Factor (a splice variant of IGF-1) studied as a growth factor in muscle and tissue-repair research, and it is a research-only compound that is not FDA-approved.Research topicsBody Height · Drug Delivery Systems · Growth Disorders · PrognosisPinealonResearchPinealon is a synthetic short-chain tripeptide of the Khavinson bioregulator family, grouped under cognitive and neuroprotective research, and is not FDA-approved and handled as a research-only compound.Research topicsBrain · Hypoxia · Behavior, Animal · RussiaPNC-27ResearchPNC-27 is a synthetic chimeric peptide combining a p53-derived HDM-2-binding sequence with a membrane-penetrating leader, studied within oncology and cancer-cell-biology research, and it is research-only and not FDA-approved.Research topicsCell Membrane · Necrosis · Apoptosis · Protein BindingProstamaxResearchProstamax is a synthetic short-chain peptide bioregulator in the Khavinson family associated with prostate tissue, studied within the anti-aging and tissue-specific research category and supplied as a research-only compound that is not FDA-approved.Research topicsLymphocytes · Calorimetry, Differential Scanning · Nucleic Acid DenaturationPTD-DBMResearchPTD-DBM is a synthetic research peptide in the Wnt/beta-catenin signaling modulator family, grouped with healing and tissue-repair research compounds, and it is research-only and not FDA-approved.Research topicsWnt Signaling Pathway · Alopecia · Hair · Alzheimer DiseaseSelankResearchSelank is a synthetic heptapeptide analog of the immunomodulatory fragment tuftsin, grouped with cognitive and mood research peptides, and it is not FDA-approved (research-only in the United States, though approved as an anxiolytic in Russia).Research topicsBehavior, Animal · Anxiety · Brain · Injections, IntraperitonealSemaxResearchSemax is a synthetic ACTH(4-10)-derived heptapeptide grouped in the cognitive and neuroprotective research category, and it is research-only and not FDA-approved in the United States.Research topicsBrain Ischemia · Brain · Transcriptome · Gene Expression RegulationSermorelinResearchBannedSermorelin is a synthetic growth-hormone-releasing hormone (GHRH 1-29) peptide analog studied as a growth-hormone secretagogue, currently research-only with no active FDA-approved commercial product and prohibited in sport under the WADA list.Research topicsChild, Preschool · Body Height · Cell Proliferation · Growth DisordersSLU-PP-332ResearchBannedSLU-PP-332 is a synthetic small-molecule pan-ERR (estrogen-related receptor) agonist studied in the metabolic and exercise-physiology research category, and it is research-only and not FDA-approved.Research topicsExercise · Energy Metabolism · Exercise Tolerance · Heart FailureSNAP-8 (Acetyl Octapeptide-3)ResearchSNAP-8 (Acetyl Octapeptide-3) is a synthetic eight-amino-acid cosmetic peptide of the neuromuscular-modulating class, studied in the skin and cosmetic research category, and it is not an FDA-approved drug.Research topicsSkin Aging · Fibroblasts · Keratinocytes · SkinTB-500ResearchBannedTB-500 is a synthetic acetylated heptapeptide fragment of thymosin beta-4, grouped with healing and tissue-repair research peptides, and is a research-only compound that is not FDA-approved.Research topicsWound Healing · Athletic Injuries · Achilles Tendon · Athletic PerformanceTestagenResearchTestagen is a synthetic short-chain peptide (a Khavinson-type tetrapeptide bioregulator) grouped with reproductive and endocrine research compounds, and it is research-only and not FDA-approved.Research topicsPeptides · Amino Acids · Copper · Saline SolutionThymalinResearchThymalin is a thymus-derived polypeptide bioregulator, grouped with immune peptides, that is not FDA-approved and is handled as a research-only compound in the United States.Research topicsThymus Gland · Molecular Weight · Circular Dichroism · Protein BindingThymosin Alpha-1ResearchThymosin Alpha-1 is a 28-amino-acid thymic peptide grouped in the immune category, approved as a pharmaceutical in a number of countries but not FDA-approved in the United States.Research topicsNeoplasms · COVID-19 · Immunotherapy · Thymus GlandVesugenResearchVesugen is a short synthetic peptide bioregulator (the tripeptide Lys-Glu-Asp) from the Khavinson bioregulator family, grouped with vascular and anti-aging research compounds, and it is supplied for laboratory research only and is not FDA-approved.Research topicsBrain · Cell Differentiation · Cell Proliferation · HypoxiaVilonResearchVilon is a synthetic dipeptide (lysine-glutamate) from the Khavinson short-peptide bioregulator family, studied mainly in Russian immune and aging literature. It is research-only and not FDA-approved.Research topicsThymus Gland · T-Lymphocytes · Cell Differentiation · Gene Expression RegulationVIP (Vasoactive Intestinal Peptide)ResearchVIP is a 28-amino-acid neuropeptide of the secretin/glucagon peptide family, discussed mainly in immune and gastrointestinal research contexts, and it is not FDA-approved as a finished drug.Research topicsMicroglia · Neuroprotection · Signal Transduction · Inflammation
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Stacking & combinations
How these compounds are discussed in the research literature. Named blends below are informal community and vendor labels, not standardized or approved products, and combination pharmacology is under-studied, so “synergy” is usually proposed rather than proven.
Frequently referenced compounds
The individual compounds most often searched, grouped by research area.
Healing & recovery
Growth hormone axis
Longevity, skin & specialty
EpitalonStudied in longevity and circadian researchMOTS-cStudied in mitochondrial and metabolic researchGHK-CuA copper peptide studied in skin and connective-tissue researchSemaxStudied in nootropic and neuro researchDSIPA delta sleep-inducing peptide (sleep research)PT-141A melanocortin agonist studied in sexual-health research
Named blends you’ll see referenced
Wolverine 2-part
The base two-part repair blend, named for fast-healing lore. Pairs BPC-157 (angiogenesis, gut and vascular research) with TB-500, a thymosin beta-4 fragment studied for cell migration and actin regulation.
GLOW 3-part
Wolverine plus GHK-Cu. The added copper tripeptide brings skin and connective-tissue remodeling research, which is where the “glow” name comes from. Commonly a ~70 mg three-peptide vial.
KLOW 4-part
GLOW plus KPV, a tripeptide studied for anti-inflammatory and gut-barrier signaling (NF-κB). The most-cited four-part repair blend; often a ~80 mg vial.
CJC-1295 / Ipamorelin 2-part
The most widely compounded GH-axis blend: a GHRH analog for sustained GH signaling with a GHRP for a strong, clean pulse.
Sermorelin / Ipamorelin 2-part
The gentler entry GH pairing: a short, truncated GHRH analog with a GHRP, studied for pulsatile, regulated GH release.
Tesamorelin / Ipamorelin 2-part
A stabilized GHRH analog studied for visceral fat, paired with a GHRP pulse. The GH-axis blend with the strongest metabolic lean.
CagriSema 2-part
An amylin analog (Cagrilintide) with a GLP-1 agonist (Semaglutide), studied together for two distinct satiety pathways and a larger weight-research signal than either alone.
Semaglutide / Tesamorelin 2-part
A metabolic pairing: GLP-1 appetite research alongside GHRH-driven lipolysis research, often discussed for visceral-fat contexts.
Commonly researched together
A GHRH analog paired with a GHRP. They act on two complementary arms of growth-hormone release, so together they are studied for a larger, cleaner GH pulse than either alone. The most established pairing in GH-axis research.
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The same GHRH-plus-GHRP logic as CJC-1295 + Ipamorelin, built around a stabilized GHRH analog.
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A short-acting GHRH with a growth-hormone secretagogue; a classic combination in GH-axis literature.
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Frequently studied together in tissue-repair research for proposed complementary mechanisms: BPC-157 with angiogenesis and gut/vascular effects, TB-500 (a thymosin beta-4 fragment) with cell migration and actin regulation.
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Discussed together in skin and connective-tissue research, pairing tissue remodeling with angiogenesis.
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A longevity-and-skin research pairing that combines circadian/telomerase research with tissue-remodeling research.
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Redundant or usually not combined
Both act on overlapping incretin (GLP-1 / GIP) pathways. Combining two incretin agonists rarely adds benefit in the literature and compounds gastrointestinal effects.
Both are growth-hormone secretagogues at the same receptor, so combining them is largely redundant.
Both are GHRH analogs acting on the same receptor; using two together is redundant.
Both are melanocortin agonists with overlapping activity, so pairing them stacks the same mechanism.
Mixing in one cartridge
Combining compounds in a single cartridge is a stability question, not only a dosing-math one. Peptides differ in their optimal pH, buffers, and shelf life, so some stay stable co-dissolved while others degrade faster together, and any multi-compound blend shortens a conservative beyond-use window. When compatibility is unknown, reconstitute separately or keep short-dated blends cold. Our DIY blend calculator handles the volumes once you have decided what can share a cartridge.
For research and educational reference only. PreppinPeppers sells laboratory hardware and materials (pens, cartridges, bacteriostatic water); it does not sell peptides or any substance for consumption. This content is educational only. It is not medical, health, veterinary, dosing, or compounding advice, has not been evaluated by the FDA, and is not intended to diagnose, treat, cure, or prevent any condition, or for human or animal use. Verify current FDA and WADA status and the laws that apply to you, and consult a licensed professional for any health decision.
