A Library for a closer look.
Explore compounds, their mechanisms and the evidence. Peptides, proteins, blends, non-peptides and unresolved identities are distinguished here.
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5-Amino-1MQ
5-Amino-1MQ is an experimental small-molecule NNMT inhibitor, not a peptide.
ACE-031
ACE-031 is an investigational soluble activin-receptor fusion protein that binds myostatin and related ligands.
Acetic Acid 0.6%
Acetic acid is the defined small molecule CH3COOH, PubChem CID 176, not a peptide. The catalog’s 0.6% description alone does not identify an injectable product.
Adipotide (FTPP)
Adipotide is an experimental peptidomimetic designed to target blood vessels in white fat. Its animal weight-loss findings do not establish a safe human obesity treatment.
ADP355
ADP355 is an experimental peptide agonist of adiponectin receptors.
ADP399
ADP399 is an experimental branched dimer developed from ADP355.
AHK-Cu
AHK-Cu is an alanine–histidine–lysine copper complex studied in isolated human hair follicles and cultured dermal papilla cells. That is laboratory research, not evidence that a scalp product reverses hair loss in patients.
AICAR
AICAR in this entry means acadesine, or AICA-riboside: a non-peptide research compound. Mouse exercise experiments and human cardiac-surgery trials answer different questions; neither establishes a personal endurance or longevity regimen.
Amycretin
Amycretin is a single-molecule investigational GLP-1 and amylin receptor agonist.
AOD-9604
AOD-9604 is a synthetic 16-amino-acid peptide: growth-hormone residues 177–191 with an added N-terminal tyrosine. It was investigated for obesity. Free base and acetate are distinct drug substances; a generic “HGH fragment” label does not verify an exact product.
Apraglutide
Apraglutide is a long-acting GLP-2 analogue studied in short bowel syndrome with intestinal failure.
ARA-290 (Cibinetide)
ARA-290 is an erythropoietin-derived investigational peptide designed to separate tissue-protection signaling from red-cell production.
Argireline
Argireline is acetyl hexapeptide-8, investigated in topical wrinkle formulations.
ATN-161
ATN-161 (Ac-PHSCN-NH2) is a fibronectin-derived integrin antagonist pentapeptide.
Bacteriostatic Water
HealthFirst/Hospira Bacteriostatic Water for Injection, 30 mL. This snapshot covers the named U.S. presentation only.
BAM15
BAM15 is a small-molecule mitochondrial uncoupler, not a peptide. It is included as a related research compound.
BPC-157
BPC-157 is a synthetic 15-amino-acid research peptide with extensive laboratory literature and a small, heterogeneous human evidence base. Human reports include local knee and bladder treatment and a two-person IV pilot; these do not establish routine injury treatment or product safety.
Cagrilintide
Cagrilintide is a long-acting amylin analogue studied for weight management; it is a component of the separately studied CagriSema combination.
CagriSema
CagriSema denotes coadministration of cagrilintide and semaglutide, not a single peptide.
Cartalax
Cartalax denotes the tripeptide Ala-Glu-Asp (AED). PubChem records this structure as CID 87815447; it is distinct from the four-residue AEDG peptide.
Cerebrolysin
Cerebrolysin is a peptide preparation evaluated as an adjunct in neurological treatment studies.
CJC-1295 (no DAC)
“CJC-1295 without DAC” is a commercial naming convention that must be distinguished from the albumin-binding CJC-1295 studied in the linked paper.
CJC-1295 with DAC
CJC-1295 with DAC is a long-acting GHRH analogue designed to bind circulating albumin. Human studies measured GH and IGF-I responses; they did not establish the promoted recovery, sleep or body-composition benefits.
CT-388
CT-388 is a peptide-based dual GLP-1/GIP receptor agonist studied for obesity.
Dapiglutide
Dapiglutide is a dual GLP-1/GLP-2 receptor agonist peptide studied for obesity.
Dermorphin
Dermorphin is a potent opioid peptide originally isolated from amphibian skin.
Dihexa
Dihexa is an experimental angiotensin IV-derived peptidomimetic investigated in cognition research. Important early publications carry a retraction or a notice of concern, so their claims need explicit qualification.
DSIP
DSIP, also called delta sleep-inducing peptide or emideltide, has been studied experimentally for sleep. Small historical human studies used IV administration; results do not establish a routine insomnia treatment.
Ecnoglutide
Ecnoglutide is a cAMP-biased GLP-1 receptor agonist studied for weight management.
Epitalon
Epitalon (Epithalon; AEDG) is a synthetic tetrapeptide studied in cellular aging research. Human cells in a laboratory are not treated patients, and results for pineal extracts cannot automatically be attributed to this specific peptide.
EPO
EPO is an erythropoietic hormone. This snapshot covers EPOGEN epoetin alfa; darbepoetin is a different medicine.
FLGR-242
FLGR-242 has a reported product description, summarized below. The exact molecular structure and its connection to clinical research remain unverified.
Follistatin 344
FS344 is a follistatin gene-expression construct studied using a viral vector; gene delivery differs from injecting purchased protein.
FOXO4-DRI
FOXO4-DRI is an experimental peptide designed to disrupt FOXO4–p53 interaction in senescent cells.
GDF-8 (Myostatin)
GDF-8, or myostatin, is a negative regulator of skeletal-muscle growth.
GHK
Copper-free GHK is Gly-His-Lys; it is distinct from the copper complex GHK-Cu.
GHK-Cu
GHK-Cu is the copper(II) complex of the three-amino-acid peptide glycyl-histidyl-lysine. Research has examined tissue repair and topical skin products. Free GHK, copper-bound GHK and other copper peptides are not interchangeable identities.
GHRP-2
GHRP-2 is an experimental growth-hormone secretagogue receptor agonist.
GHRP-6
GHRP-6 is a synthetic hexapeptide studied for stimulation of growth-hormone release.
Glepaglutide
Glepaglutide is a long-acting GLP-2 analogue studied in short bowel syndrome.
GLOW
GLOW is a blend name rather than a single peptide. Documented ingredient examples are provided below; the name does not guarantee a standard composition or clinical benefit.
GLP-1 (Native)
Native GLP-1 is an incretin hormone; it is distinct from long-acting receptor-agonist medicines.
Glutathione
Glutathione is a tripeptide studied in multiple formulations and clinical contexts.
Gonadorelin
Gonadorelin is GnRH; pulsatile delivery and intermittent self-injection are distinct treatment approaches.
HCG
PREGNYL chorionic gonadotropin, 10,000 USP-unit multidose vial. This snapshot covers the named U.S. presentation only.
Hexarelin
Hexarelin is a synthetic growth-hormone-releasing hexapeptide.
HMG
MENOPUR menotropins, 75 IU FSH and 75 IU LH activity per vial. This snapshot covers the named U.S. presentation only.
Humanin
Humanin is a short peptide identified through experiments on neuronal survival.
Hyaluronic Acid
Hyaluronic acid occurs in different products; approval applies to an identified device and use, not the ingredient universally.
Icotrokinra
Icotrokinra is an oral peptide targeting the IL-23 receptor. FDA lists Icotyde for eligible patients with moderate-to-severe plaque psoriasis.
IGF-1 DES
IGF-1 DES is an IGF-1 derivative lacking the first three N-terminal residues, Gly-Pro-Glu. The studied truncated molecule is distinct from intact IGF-1 and from LR3; its name does not establish a site-specific muscle-growth effect.
IGF-1 LR3
IGF-1 LR3 is a modified IGF-1 research protein with a 13-residue N-terminal extension and an arginine replacing glutamate at position 3 of the IGF-1 sequence. It is structurally distinct from intact IGF-1 and DES.
Insulin
HUMALOG insulin lispro; selected vial and pen instructions. This snapshot covers the named U.S. presentation only.
Ipamorelin
Ipamorelin is an investigational GH-releasing peptide. Human IV studies examined hormone responses and postoperative bowel recovery; they do not establish the sleep, fat-loss or “gentle starter peptide” claims sometimes used in marketing.
Kisspeptin-10
Kisspeptin-10 is a kisspeptin isoform that stimulates the reproductive hormone axis.
KLOW
KLOW is a blend name rather than a single peptide. Documented ingredient examples are provided below; the name does not guarantee a standard composition or clinical benefit.
KP-54
This entry covers kisspeptin-54; it is distinct from kisspeptin-10 and is not an interchangeable dose.
KPV
KPV is the tripeptide lysine–proline–valine, investigated for anti-inflammatory effects. Its cited gut research used cells and mice; it does not establish treatment of human bowel disease.
L-Carnitine
L-carnitine is a metabolic nutrient; this selected trial studied oral levocarnitine.
Larazotide acetate
Larazotide acetate is an investigational tight-junction regulator studied in celiac disease.
Lemon Bottle
Lemon Bottle is a commercial product name, not a verified single peptide.
Linaclotide
Linaclotide is an oral peptide medicine that acts locally in the intestine; Linzess labeling covers specified constipation disorders.
Liraglutide
VICTOZA liraglutide 6 mg/mL prefilled pen. This snapshot covers the named U.S. presentation only.
LL-37
LL-37 is a human cathelicidin peptide studied in immune biology and wound repair. Human trials have tested topical wound formulations; those trials do not validate injected LL-37 for infections.
MariTide (Maridebart cafraglutide)
MariTide is a peptide–antibody conjugate combining GLP-1 agonism with GIP-receptor antagonism.
Matrixyl
This entry covers palmitoyl pentapeptide-4 (pal-KTTKS); other Matrixyl-branded blends require separate evaluation.
Mazdutide
Mazdutide is a dual GLP-1/glucagon receptor agonist.
Melanotan I (Afamelanotide)
SCENESSE afamelanotide implant. This snapshot covers the named U.S. presentation only.
Melanotan II
Melanotan II is a synthetic cyclic seven-amino-acid analogue of alpha-melanocyte-stimulating hormone. Small historical studies examined pigmentation and erections. It is a different compound from Melanotan I/afamelanotide and should not inherit that medicine’s product evidence.
Melatonin
Melatonin is a hormone involved in sleep timing, not a peptide.
MGF
MGF is used for both an IGF-1 splice-product context and a short synthetic E-peptide derived from its C-terminal region. These are different experimental materials. An MGF vial label alone does not identify the sequence, terminal modifications or equivalence to a full-length IGF-1 precursor.
MIC / Lipo-C
MIC / Lipo-C is a blend name rather than a single peptide. Documented ingredient examples are provided below; the name does not guarantee a standard composition or clinical benefit.
MID-35
MID-35 is a synthetic myostatin-inhibitory D-peptide studied for muscle growth. It is distinct from follistatin proteins and FLGR-242 marketing claims.
MK-677 (Ibutamoren)
MK-677, or ibutamoren, is an oral small-molecule ghrelin mimetic, not a peptide.
MOTS-c
MOTS-c is a 16-amino-acid peptide encoded in the mitochondrial 12S rRNA region. It is investigated in metabolism and exercise biology; endogenous measurements in humans do not establish benefits from taking it.
N-Acetyl Selank
N-Acetyl Selank is an N-terminally acetylated Selank derivative. PubChem CID 133082488 describes a free C-terminal carboxylic acid. Additional C-terminal amidation would define a different structure; a parent Selank or acetate-salt label does not identify this modification.
N-Acetyl Semax
N-Acetyl Semax adds an acetyl group to the N-terminus of Semax. The free-acid form and the additionally C-terminally amidated form have different chemical records. The name alone must not silently substitute an amidate for the free acid.
NAD+
NAD+ is a cellular cofactor, not a peptide. NAD+ and nicotinamide riboside are different substances.
Oxytocin
Pitocin oxytocin, 10 units/mL pharmacy bulk package. This snapshot covers the named U.S. presentation only.
P140
P140 is a phosphorylated spliceosomal peptide investigated as an immune-modulating treatment in lupus.
P21 / P021
P21/P021 denotes the CNTF-derived peptidomimetic indexed as P-21 in the ChemIDplus substance record linked to PubChem CID 56599151. It contains an acetylated DGGL core and a terminal adamantane-based modification; it is not the p21/CDKN1A protein.
PE 22-28
PE 22-28 is a seven-residue spadin-derived research peptide studied at the TREK-1 channel.
PEG-MGF
PEG-MGF names a PEGylated mechano-growth-factor research construct. It should not be equated with full-length IGF-1Ec, native MGF or a non-PEGylated synthetic E-peptide. The exact sequence, PEG size, attachment site and product identity must be verified before a study can be matched to it.
Pemvidutide
Pemvidutide is an investigational GLP-1/glucagon dual-receptor agonist.
Pentadeca Arginate
Pentadeca Arginate has a reported product description, summarized below. The exact molecular structure and its connection to clinical research remain unverified.
Petrelintide
Petrelintide is an investigational long-acting amylin analogue.
Pinealon
Pinealon is the experimental tripeptide Glu-Asp-Arg.
PL8177
PL8177 is a selective melanocortin-1 receptor agonist studied in a specialized oral formulation.
Plecanatide
Plecanatide is an oral peptide medicine used for adult chronic idiopathic constipation and irritable bowel syndrome with constipation.
PNC-27
PNC-27 combines a p53-derived binding domain with a membrane-penetrating peptide.
PNC-28
PNC-28 combines a p53-derived segment with a cell-penetrating sequence; it is distinct from PNC-27.
Pramlintide
Pramlintide is an amylin analogue supplied as Symlin for selected insulin-treated patients with diabetes.
PT-141 (Bremelanotide)
VYLEESI bremelanotide 1.75 mg/0.3 mL autoinjector. This snapshot covers the named U.S. presentation only.
Retatrutide
Retatrutide is an investigational agonist of GIP, GLP-1 and glucagon receptors.
RFSH (Follitropin)
GONAL-f follitropin alfa multidose powder vials. This snapshot covers the named U.S. presentation only.
Rusfertide
Rusfertide is an injectable peptide that mimics hepcidin, an iron-regulating hormone.
Selank
Selank is the synthetic heptapeptide Thr-Lys-Pro-Arg-Pro-Gly-Pro studied in serum-enzyme experiments and small anxiety studies. This parent-peptide identity does not establish interchangeability with an N-acetyl derivative or a particular finished formulation.
Semaglutide
Semaglutide activates the GLP-1 receptor. This source check covers the U.S. Ozempic injection label; other semaglutide brands and formulations need their own prescribing information.
Semax
Semax is the synthetic heptapeptide Met-Glu-His-Phe-Pro-Gly-Pro, developed from an ACTH-fragment concept. Free base, acetate salt and N-terminally acetylated derivatives are different materials; a Semax label alone does not establish interchangeability.
Sermorelin
Sermorelin is GHRH(1–29) amide, studied as a growth-hormone secretagogue.
Setmelanotide
IMCIVREE setmelanotide 10 mg/mL multidose vial. This snapshot covers the named U.S. presentation only.
SHLP2
SHLP2 is small humanin-like peptide 2, a mitochondrial-derived research peptide.
SHLP3
SHLP3 is small humanin-like peptide 3, distinct from SHLP2.
SLU-PP-332
SLU-PP-332 is a small-molecule ERR agonist, not a peptide.
SNAP-8
SNAP-8 refers to acetyl octapeptide-3; the selected study used it within a multi-ingredient microneedle patch.
Somatropin (HGH)
GENOTROPIN somatropin cartridges and MiniQuick devices. This snapshot covers the named U.S. presentation only.
SS-31 / Elamipretide
Elamipretide is a cardiolipin-binding peptide. Forzinity is a specific prescription formulation.
Sterile Water for Injection
Henry Schein/Hospira Sterile Water for Injection, single-dose vial. This snapshot covers the named U.S. presentation only.
Survodutide
Survodutide (BI 456906) is a dual glucagon/GLP-1 receptor agonist studied for obesity.
TB-500
TB-500 is a product name with inconsistent usage. A primary analytical study identified acetylated thymosin beta-4 residues 17–23, Ac-LKKTETQ, in the tested material.
Teduglutide
Teduglutide is a GLP-2 analogue supplied as Gattex for eligible patients with short bowel syndrome dependent on parenteral support.
Tesamorelin
EGRIFTA WR tesamorelin 11.6 mg vial. This snapshot covers the named U.S. presentation only.
Testagen
Testagen is the tetrapeptide Lys-Glu-Asp-Gly (KEDG) in the cited experimental literature. It is not a testosterone formulation.
Thymalin
Thymalin is a thymus-derived polypeptide complex, not a single defined peptide.
Thymosin α1
Thymosin alpha-1 is an immunomodulatory peptide studied in selected patient populations.
Tirzepatide
Tirzepatide activates GIP and GLP-1 receptors. This source check covers the U.S. Mounjaro injection label; it does not transfer instructions to other brands or compounded products.
Vilon
Vilon is the dipeptide Lys-Glu (KE), explicitly named in animal experiments and a Russian human report.
VIP
Aviptadil is a synthetic vasoactive intestinal peptide studied in several clinical settings.
Vitamin B12
Henry Schein/Somerset cyanocobalamin 1,000 mcg/mL multidose injection. This snapshot covers the named U.S. presentation only.
VK2735
VK2735 is an investigational dual GIP/GLP-1 receptor agonist.