Peptide Glossary

The process by which precursor cells develop into mature fat cells (adipocytes). Compounds that inhibit adipogenesis are studied for fat loss applications — AOD-9604 works in part by inhibiting this process.

The molecular building blocks of peptides and proteins. There are 20 standard amino acids used by the human body, each with a unique side chain that determines its chemical properties. Peptides are chains of amino acids linked by peptide bonds.

A molecule that has both hydrophilic (water-attracting) and hydrophobic (water-repelling) regions. LL-37 is amphipathic — its hydrophobic face inserts into bacterial membranes while its cationic face attracts it to negatively charged microbial surfaces. This property is essential to its antimicrobial mechanism.

The formation of new blood vessels from existing ones. BPC-157 is believed to promote angiogenesis — increasing blood supply to damaged tissue — which may explain its observed tissue repair effects in animal studies.

Programmed cell death — a normal and controlled process by which the body eliminates damaged or unnecessary cells. Humanin works by inhibiting apoptosis in neurons, potentially protecting brain cells from Alzheimer's-related death signals.

A master regulator of cellular energy homeostasis. When energy is low, AMPK activates processes that generate ATP (fat oxidation, glucose uptake) and suppresses energy-consuming processes. MOTS-c activates AMPK — the same pathway triggered by exercise — which is why it is called an exercise mimetic.

A class of naturally occurring peptides that form part of the innate immune system's defense against infection. AMPs typically work by disrupting microbial cell membranes. LL-37 is the only known human cathelicidin AMP and one of the most studied AMPs in existence.

Research conducted in non-human animals, typically rodents. Animal studies are useful for establishing biological plausibility and safety signals but do not reliably predict human outcomes. PeptideClear assigns "Animal Only" evidence grade to compounds where all primary data comes from animal models.

The fraction of a substance that enters circulation and is available to produce an effect. Most peptides have poor oral bioavailability because digestive enzymes break them down before absorption — which is why most must be injected. Dihexa and Ibutamoren are notable exceptions that are orally bioavailable.

A protein that supports the survival, growth, and differentiation of neurons. Often called "fertilizer for the brain." Semax upregulates BDNF — a primary proposed mechanism for its nootropic effects. Dihexa is reported to be millions of times more potent than BDNF itself at stimulating synaptogenesis in specific laboratory assays.

A selective membrane separating circulating blood from brain tissue, protecting the brain from pathogens and large molecules. Most peptides cannot cross the BBB, which limits their CNS applications. Notable exceptions in this catalog: Semax, Selank, DSIP, and Dihexa — all of which demonstrate BBB penetration.

Chemical Abstracts Service Registry Number — a unique numerical identifier assigned to every chemical substance. CAS numbers allow precise identification of compounds regardless of brand name or nickname. Particularly important in the peptide space where naming confusion is common — e.g. TB-500 (CAS 77591-33-4) vs TB-500 Fragment which has a different CAS number entirely.

A family of antimicrobial peptides found in mammals. Humans have only one cathelicidin — LL-37, the C-terminal cleavage product of hCAP-18. Cathelicidins are stored in neutrophil granules and released upon immune activation as part of innate defense against infection.

A receptor tyrosine kinase activated by hepatocyte growth factor (HGF). c-Met signaling drives cell growth, survival, and synaptogenesis — the formation of new synaptic connections. Dihexa works by potentiating HGF activity at c-Met, which is its primary mechanism for cognitive enhancement. c-Met is also an oncogene, which creates a theoretical cancer risk with chronic activation.

A peptide whose amino acid chain forms a ring structure, typically via a bond between the N-terminal and C-terminal ends or between side chains. Cyclic peptides are generally more stable than linear peptides because the ring structure resists enzymatic cleavage. PT-141 is a cyclic heptapeptide — the lactam bond between its Asp and Lys residues creates the ring that gives it metabolic stability.

Small signaling proteins released by immune cells to regulate inflammation and immune responses. Pro-inflammatory cytokines like TNF-α, IL-1β, and IL-6 drive inflammation — KPV suppresses these cytokines via NF-κB inhibition. Thymosin Alpha-1 modulates cytokine expression to shift immune responses toward T-cell activation.

A variable that influences both the independent and dependent variable in a study, creating a spurious association. The "wine is good for your heart" claim was undermined by confounding — moderate drinkers tend to have higher incomes, better diets, and more exercise than abstainers, so the apparent heart benefit may have had nothing to do with wine. Identifying and controlling for confounders is a core function of well-designed research.

A licensed pharmacy that prepares customized medications not available commercially. Several peptides in this catalog — including Sermorelin and Tesamorelin — are available through licensed compounding pharmacies by prescription, providing a legitimate clinical access pathway distinct from research compound suppliers.

An observational study that follows a group of people over time to examine how exposure to a factor affects outcomes. Cohort studies cannot establish causation but can identify associations. Stronger than case reports but weaker than randomized controlled trials on the evidence hierarchy.

A chemical modification added to CJC-1295 that enables it to covalently bind albumin in the bloodstream — dramatically extending its half-life from minutes to 6-8 days. The DAC version and the without-DAC version (Modified GRF 1-29) are frequently confused in the community despite being functionally different compounds with different CAS numbers.

The reduced response of a receptor to a compound with repeated exposure. Hexarelin causes meaningful desensitization of GH release with continuous use — necessitating cycling protocols. Ipamorelin shows minimal desensitization, which is considered a clinical advantage for chronic use protocols.

A covalent bond between two cysteine residues that constrains a peptide's three-dimensional conformation. AOD-9604 has a disulfide bridge between Cys7 and Cys15 that gives it its constrained shape and contributes to its metabolic selectivity — allowing it to target fat metabolism without the growth-promoting effects of full-length hGH.

A neurotransmitter involved in reward, motivation, and movement. PT-141 activates MC4R receptors in the hypothalamus which modulate dopaminergic pathways — driving the increase in sexual desire that is its primary mechanism. This central nervous system action distinguishes it from PDE5 inhibitors which work peripherally.

A class of steroid hormones found primarily in insects and some plants. Turkesterone is an ecdysteroid extracted from Ajuga turkestanica. Unlike anabolic steroids, ecdysteroids do not appear to bind androgen receptors in humans — meaning they work through a different mechanism and are not expected to cause hormonal suppression.

Naturally occurring opioid peptides that modulate pain and mood. Selank inhibits enkephalinase — the enzyme that degrades enkephalins — increasing their half-life in the bloodstream. This is one proposed mechanism for Selank's anxiolytic and mood-stabilizing effects.

PeptideClear's primary classification of the quality and type of research supporting each compound. Grades include: Human RCT (strongest), Observational, Animal Only, Animal / In Vitro, and Emerging / Clinical Trial. The evidence grade reflects what type of research exists — not whether the compound works. A compound can have robust Animal Only data and still score low on the evidence grade.

The network of proteins (collagen, elastin, fibronectin) and other molecules that provides structural support to cells. GHK-Cu stimulates ECM remodeling — promoting collagen and elastin synthesis while suppressing matrix metalloproteinases that break down existing ECM. This is the primary mechanism for its skin anti-aging and wound healing effects.

Connective tissue cells responsible for producing collagen, elastin, and other ECM components. Palmitoyl Tripeptide-1 (Matrixyl) works by sending a matrikine signal to fibroblasts that triggers new collagen, elastin, and hyaluronic acid production — mimicking the body's natural wound repair response.

The organization that paid for a study. Industry-funded studies are not automatically invalid but are statistically more likely to produce positive results than independently funded studies. Disclosing funding sources is standard practice in reputable journals and is one of the dimensions scored in PeptideClear's Research Quality Score.

The primary inhibitory receptor in the brain — activation reduces neuronal excitability and produces calming effects. Benzodiazepines work by binding GABA-A receptors. Selank appears to modulate GABA-A receptors via a different binding site, producing anxiolytic effects without the sedation, tolerance, or dependence associated with classical benzodiazepines.

A hunger hormone produced primarily in the stomach that stimulates appetite and GH release via GHSR-1a receptor activation. Ibutamoren mimics ghrelin at GHSR-1a — producing GH secretion without injection. Hexarelin also acts at GHSR-1a but with greater potency than ghrelin itself.

The ghrelin receptor — expressed in the pituitary and hypothalamus. Activation triggers pulsatile GH release. Ibutamoren, Hexarelin, and Ipamorelin all work through GHSR-1a. Hexarelin is also unique in acting at CD36 — a second receptor that produces cardioprotective effects independent of GH release.

The non-enzymatic attachment of sugar molecules to proteins or fats, forming advanced glycation end-products (AGEs). Glycation damages proteins and is a key driver of aging and diabetic complications. Carnosine inhibits glycation — one of four distinct mechanisms through which it exerts anti-aging effects.

A peptide hormone produced by the pituitary gland that stimulates growth, cell reproduction, and metabolism. GH declines with age — which has driven significant interest in peptides that stimulate its production. Sermorelin, CJC-1295, Ipamorelin, Hexarelin, and Tesamorelin all work by stimulating pituitary GH release rather than supplying exogenous GH directly.

The hypothalamic hormone that triggers the pituitary to release GH. Sermorelin is a 29 amino acid synthetic analog of GHRH. Tesamorelin is a 44 amino acid analog with a stabilizing modification. CJC-1295 is a modified GHRH analog with a DAC group for extended half-life.

The time it takes for half of a substance to be eliminated from the body. Half-life determines dosing frequency — a peptide with a short half-life (like DSIP at 15 minutes in vitro, or Sermorelin) requires frequent dosing, while CJC-1295 with DAC (6-8 day half-life) can be dosed once or twice weekly. Dihexa has an unusually long half-life of 12.7 days in rats.

A metric that measures a researcher's productivity and citation impact. A researcher with an h-Index of 20 has published at least 20 papers that have each been cited at least 20 times. Used in PeptideClear's Research Quality Score to weight the credibility of the research team behind a compound's evidence base. Viewable publicly on Google Scholar for any named researcher.

A growth factor that drives cell survival, proliferation, and synaptogenesis through the c-Met receptor. Dihexa works by binding HGF and potentiating its activity at c-Met — driving the formation of new synaptic connections. HGF/c-Met is also an oncogenic pathway, which creates the theoretical cancer risk associated with chronic Dihexa use.

The chemical breakdown of a compound by reaction with water. Collagen supplements are hydrolyzed — broken into smaller peptide fragments — to improve absorption. Non-hydrolyzed collagen is too large to be absorbed intact; hydrolyzed collagen (collagen peptides) can be absorbed and used by the body.

A brain region that acts as the master regulator of hormonal systems, appetite, temperature, and circadian rhythm. DSIP is produced in the hypothalamus. The hypothalamus also produces GHRH (which triggers pituitary GH release) and somatostatin (which inhibits it) — creating the feedback loop that GH secretagogues work within.

A metric reflecting the average number of citations received by papers published in a journal over the past two years. Used as a proxy for journal prestige and research quality. Low-quality journals: IF 1-2. Good peer-reviewed journals: IF 3-4. High-quality journals: IF 5-7. Top-tier journals (NEJM, Nature, JAMA): IF 8+. Used in PeptideClear's Research Quality Score to evaluate where a compound's primary studies were published.

A hormone produced primarily in the liver in response to GH stimulation. IGF-1 mediates many of GH's anabolic and growth-promoting effects. Ibutamoren increases both GH and IGF-1 — making it measurable in blood tests. Elevated IGF-1 is both the mechanism of benefit (muscle, recovery) and a concern (potential cancer promotion with chronic elevation).

The ability to modify immune function — either stimulating or suppressing specific immune pathways. Thymosin Alpha-1 is immunomodulatory rather than simply immunostimulatory — it normalizes dysregulated immune responses rather than uniformly amplifying immune activity. This distinction is clinically meaningful in both immunosuppressed states (infection, cancer) and hyperinflammatory states (sepsis).

Latin for "in glass" — research conducted in a controlled environment outside a living organism, typically in cell cultures or test tubes. In vitro studies are useful for mechanistic investigation but frequently fail to translate to in vivo effects. PeptideClear assigns "Animal / In Vitro" evidence grade to compounds where evidence is limited to these conditions.

Latin for "within the living" — research conducted within a living organism. In vivo studies include animal studies and human clinical trials. In vivo results are considered more predictive of real-world outcomes than in vitro results but animal in vivo data still frequently fails to translate to humans.

A class of hormones released by the gut after eating that stimulate insulin secretion in a glucose-dependent manner. GLP-1 and GIP are the two primary incretins. GLP-1 receptor agonists (Ozempic, Wegovy) and dual GLP-1/GIP agonists (Tirzepatide) leverage incretin biology to treat diabetes and obesity.

The process by which scientific manuscripts are evaluated by independent experts before publication. Peer review is the primary quality gate for scientific literature. "Pay to publish" or predatory journals circumvent genuine peer review — a meaningful risk in the research compound space where some studies appear in low-quality journals. PeptideClear's Research Quality Score penalizes studies published without legitimate peer review.

A branded combination of four research compounds commonly referenced together in the biohacking community: GHK-Cu, KPV, BPC-157, and TB-500. Named for the initials of its components. Designed to target tissue repair and systemic inflammation through four complementary mechanisms. PeptideClear covers what each component contains — not how to use them.

A cyclic amide bond formed between an amine and a carboxylic acid group within the same molecule. In PT-141, a lactam bond between the Asp and Lys residues closes the heptapeptide into a ring — giving it metabolic stability and contributing to its receptor selectivity at MC4R.

The metabolic process by which the body converts carbohydrates and other nutrients into fatty acids and triglycerides for storage. AOD-9604 inhibits lipogenesis — reducing the conversion of dietary nutrients into new body fat — as part of its proposed fat reduction mechanism.

The breakdown of stored fat (triglycerides) into fatty acids and glycerol for energy use. AOD-9604 promotes lipolysis — the release of stored fat — via a mechanism independent of the GH receptor. Tesamorelin reduces visceral fat through GH-mediated lipolysis in adipose tissue surrounding internal organs.

Freeze-drying — a preservation process that removes water from a substance while maintaining its structure. Most research compound peptides are supplied as lyophilized powder that must be reconstituted with bacteriostatic water before use. Lyophilization extends shelf life significantly compared to liquid formulations.

A peptide fragment released during the degradation of extracellular matrix proteins that acts as a signaling molecule to regulate cell behavior. Palmitoyl Tripeptide-1 (Matrixyl) is a matrikine — it mimics a collagen breakdown signal that triggers fibroblasts to produce new collagen, elastin, and hyaluronic acid, essentially telling the skin to repair itself.

A receptor expressed primarily in the hypothalamus that modulates appetite, energy expenditure, and sexual function. PT-141 has its highest affinity for MC4R — activating dopaminergic pathways through this receptor to increase sexual desire. MC4R is also involved in energy regulation, which is why melanocortin system compounds can have overlapping metabolic and sexual effects.

A statistical method that combines results from multiple studies to produce a single, more powerful estimate of an effect. Meta-analyses sit at the top of the evidence hierarchy because they synthesize all available data rather than relying on any single study. The presence or absence of a meta-analysis is one of the factors scored in PeptideClear's Research Quality Score.

A peptide encoded within mitochondrial DNA rather than nuclear DNA — a recently discovered class of bioactive molecules. PeptideClear currently covers two MDPs: MOTS-c (metabolic regulation, exercise mimetic) and Humanin (neuroprotection, cytoprotection). Both are encoded within the ribosomal RNA genes of mitochondrial DNA and decline with age.

The specific biological process through which a compound produces its effect. Understanding mechanism distinguishes PeptideClear from surface-level content — knowing that BPC-157 promotes angiogenesis and that KPV inhibits NF-κB explains why they might have different effects despite both being described as "anti-inflammatory."

A transcription factor that controls the expression of pro-inflammatory genes. NF-κB activation triggers the production of cytokines, chemokines, and other inflammatory mediators. KPV inhibits NF-κB signaling intracellularly — a mechanistically precise anti-inflammatory approach that targets the master switch rather than individual downstream products.

A substance that enhances cognitive function including memory, focus, creativity, or motivation. In PeptideClear's catalog the Nootropics & Neuroprotection category includes Semax, Selank, Humanin, DSIP, and Dihexa — each working through distinct CNS mechanisms. The term is broadly used and loosely defined in the wellness community.

Research that observes outcomes without intervening or assigning treatments. Observational studies can establish correlation but cannot prove causation. PeptideClear assigns "Observational" evidence grade to compounds where the primary human evidence comes from observational rather than controlled research — including CJC-1295, Ibutamoren, AOD-9604, and the Russian-developed nootropics Semax and Selank.

The use of an FDA-approved drug for an indication, population, or dosage not specified in its approved labeling. Legal for physicians to prescribe but not for manufacturers to promote. Several compounds in this catalog are FDA-approved for specific indications but used off-label for longevity, body composition, or other purposes — including Tesamorelin, PT-141, and Thymosin Alpha-1.

A pharmaceutical agent developed to treat rare diseases affecting fewer than 200,000 people in the US. The FDA grants orphan drug designation to incentivize development of treatments for rare conditions. Thymosin Alpha-1 received FDA orphan drug designation for conditions including DiGeorge syndrome and hepatocellular carcinoma.

A short chain of amino acids linked by peptide bonds, typically fewer than 50 amino acids. Peptides are smaller than proteins and are produced naturally throughout the body as signaling molecules, hormones, and structural components. The compounds in PeptideClear's catalog range from 2 amino acids (Carnosine) to 44 amino acids (Tesamorelin).

The covalent chemical bond formed between the carboxyl group of one amino acid and the amino group of another, releasing water in the process. The sequence and number of peptide bonds determine a peptide's primary structure and consequently its biological activity.

A clinical trial in which some participants receive the treatment being studied and others receive an inert placebo. Comparing outcomes between groups isolates the treatment effect from the placebo effect. Placebo-controlled design is a core component of the randomized controlled trial and is required for PeptideClear to assign Human RCT evidence grade.

The degree to which a study's participants represent the broader population — across age, sex, ethnicity, and health status. Studies conducted exclusively on young white men may not produce findings that generalize to women, older populations, or different ethnicities. Population diversity is one of the seven dimensions scored in PeptideClear's Research Quality Score, as flagged by Professor Erica Bailey at UC Berkeley.

A publication that charges authors fees to publish without providing legitimate peer review. Predatory journals mimic legitimate scientific journals in appearance but lack editorial standards. Research published in predatory journals should be weighted very low — PeptideClear's Research Quality Score assigns near-zero points for studies in known predatory publications.

A medication that requires a licensed healthcare provider's authorization before it can be dispensed. Several compounds in PeptideClear are prescription-only including GLP-1 analogs, Tirzepatide, Tesamorelin, Sermorelin, and PT-141. Accessing these compounds without a prescription is illegal and bypasses the medical oversight that makes their use appropriate.

The natural pattern of hormone secretion in intermittent bursts rather than continuous flow. Growth hormone is naturally released in pulses — primarily during deep sleep. GHRH analogs like Sermorelin and CJC-1295 preserve this pulsatile pattern by stimulating the pituitary's own release mechanisms rather than flooding the system with exogenous GH.

A form of inflammatory cell death — distinct from apoptosis — triggered by inflammasome activation. Pyroptosis releases inflammatory content into surrounding tissue and is a driver of sepsis-related organ damage. LL-37 inhibits LPS/ATP-induced pyroptosis in macrophages through dual mechanisms, which may explain its potential protective role in sepsis.

The gold standard of clinical research. Participants are randomly assigned to treatment or control groups — eliminating selection bias. When blinded (participants and/or researchers don't know who receives treatment), RCTs can establish causation rather than merely correlation. PeptideClear's strongest evidence grade — Human RCT — requires this design in human subjects.

The independent reproduction of a study's findings by a different research group. A single impressive study that has never been replicated should be held lightly — many initial findings fail to replicate, a phenomenon known as the replication crisis. Replication is one of the highest-weighted dimensions in PeptideClear's Research Quality Score (20 points) because it is the most reliable indicator of a finding's robustness.

A substance sold legally for laboratory research purposes but not approved for human therapeutic use. Research compounds occupy a legal grey zone — they are not illegal to purchase but are not approved for administration to humans. Many peptides in PeptideClear's catalog are sold as research compounds, including BPC-157, TB-500, KPV, Semax, and Selank.

PeptideClear's proprietary scoring framework that evaluates the methodological strength of evidence behind each compound, scored out of 100 points across seven dimensions: Study Design (25 pts), Sample Size (20 pts), Replication (20 pts), Journal Impact Factor (15 pts), Funding Independence (10 pts), Population Diversity (5 pts), and Researcher h-Index (5 pts). Designed to help visitors understand not just what the research says but how much weight to give it.

A substance that stimulates another substance to be secreted. Growth hormone secretagogues (GHS) — including Ipamorelin, Hexarelin, and Ibutamoren — stimulate the pituitary to secrete GH. This is mechanistically distinct from administering exogenous GH directly, as secretagogues preserve the body's own regulatory feedback systems.

The deepest stage of non-REM sleep, also called delta sleep. SWS is when the majority of GH secretion occurs, physical restoration happens, and memories are consolidated. DSIP specifically promotes slow-wave sleep — which is why it is called "Delta Sleep-Inducing Peptide" — rather than producing generalized sedation.

A hormone that inhibits GH release — the counterpart to GHRH in the hypothalamic-pituitary axis. GHRH analogs like Sermorelin and Tesamorelin work within this regulatory system — they stimulate GH release but somatostatin can still suppress it, preventing dangerous GH excess. DSIP inhibits somatostatin release via a dopaminergic mechanism, which secondarily stimulates GH — an indirect GH-releasing mechanism.

Administration of a substance into the tissue layer between the skin and muscle. Most injectable peptides in this catalog are administered subcutaneously rather than intravenously or intramuscularly. Subcutaneous injection is generally simpler and lower-risk than intravenous administration and produces slower, more sustained absorption.

The methodological framework of a research study — including whether it is an RCT, observational study, animal study, or in vitro experiment. Study design is the single most important determinant of evidence quality and carries the highest weight (25 points) in PeptideClear's Research Quality Score. The hierarchy from strongest to weakest: Multiple RCTs → Single RCT → Observational → Phase I/II trials → Animal → In vitro.

The formation of new synaptic connections between neurons. Synaptogenesis underlies learning, memory consolidation, and cognitive recovery after injury. Dihexa works by activating the HGF/c-Met pathway to drive synaptogenesis — making it mechanistically unique among the nootropic compounds in this catalog, all of which target the brain through different pathways.

An enzyme that extends telomeres — the protective caps at the ends of chromosomes that shorten with each cell division. Telomere shortening is associated with cellular aging and senescence. Epitalon is proposed to activate telomerase, potentially slowing this process. Telomerase is also activated in most cancers, creating a theoretical oncogenic concern with compounds that upregulate it chronically.

Protective sequences of repetitive DNA at the ends of chromosomes, often compared to the plastic tips on shoelaces. Telomeres shorten with each cell division and with oxidative stress — when they become too short the cell can no longer divide and enters senescence. Telomere length is considered a biological marker of cellular aging.

A primary lymphoid organ in the chest where T-cells mature and are educated to distinguish self from non-self. The thymus involutes (shrinks) with age — contributing to the immune decline of aging. Thymosin Alpha-1 is naturally produced by the thymus and declines as the thymus involutes, which is the rationale for exogenous supplementation in aging and immunocompromised populations.

Pattern recognition receptors of the innate immune system that detect pathogen-associated molecular patterns and trigger immune responses. Thymosin Alpha-1 activates TLR2 and TLR9 on dendritic cells — initiating the innate immune cascade that drives T-cell differentiation, NK cell activation, and antiviral defense.

A naturally occurring tetrapeptide (Thr-Lys-Pro-Arg) produced by the spleen as a fragment of immunoglobulin G. Tuftsin activates macrophages and modulates immune function but is rapidly degraded in plasma. Selank was created by adding a Pro-Gly-Pro stabilizing tail to Tuftsin, dramatically improving its stability and enabling CNS penetration while preserving its immunomodulatory and anxiolytic properties.

Fat stored around internal organs in the abdominal cavity — as opposed to subcutaneous fat stored under the skin. VAT is metabolically active and associated with insulin resistance, cardiovascular disease, and systemic inflammation. Tesamorelin is specifically approved to reduce VAT in HIV-associated lipodystrophy and is the most clinically validated compound for targeted visceral fat reduction in this catalog.

A fat-soluble vitamin that regulates immune function, bone metabolism, and numerous other biological processes. Relevant to LL-37 because sun exposure activates vitamin D production which in turn upregulates LL-37 expression in airway epithelial cells — a mechanistic link between vitamin D deficiency, reduced LL-37 levels, and increased susceptibility to respiratory infections.

A branded combination of two research compounds commonly referenced in the biohacking and recovery community: BPC-157 and TB-500. Named after the Marvel character's regenerative abilities. The combination targets complementary axes of tissue repair — BPC-157 via angiogenesis and TB-500 via cell migration. Forms the foundation from which the GLOW and KLOW stacks are built.

The international organization that sets and enforces anti-doping regulations in competitive sport. WADA's Prohibited List (updated annually) bans numerous peptides and growth hormone secretagogues. Compounds prohibited under WADA Section S2 include CJC-1295, Hexarelin, Ipamorelin, Ibutamoren, and Sermorelin. Athletes subject to anti-doping testing should consult WADA's current list before using any compound in this catalog.