An overview of published scientific research across the major peptide categories in the Purist Labs catalog. All content is based on peer-reviewed literature and is presented for educational and research context only.
Growth hormone secretagogues represent one of the most extensively studied classes of research peptides. These compounds work by stimulating pulsatile GH release from the anterior pituitary, either through GHRH receptor agonism (CJC-1295, Sermorelin) or ghrelin receptor agonism (Ipamorelin, GHRP-2, GHRP-6, Hexarelin).
CJC-1295 is a long-acting GHRH analog studied for its ability to sustain elevated GH and IGF-1 levels. Research has explored its role in muscle mass, fat metabolism, and recovery contexts. Sermorelin, a truncated GHRH analog, has been studied in GH deficiency research and age-related endocrine decline contexts.
Ipamorelin is notable among GHRPs for its selectivity: it stimulates GH release without significantly increasing cortisol or prolactin, making it a popular subject for GH research. GHRP-2 and GHRP-6 are studied for their potent GH-stimulating properties. Hexarelin has been investigated for both GH-releasing and cardioprotective properties independent of GH.
Research use only. These findings are from published scientific literature and do not constitute clinical claims. All products are for investigational use by licensed providers only.
The GLP-1 receptor agonist class is among the most intensively researched in modern metabolic science. These peptides mimic the action of glucagon-like peptide-1, an incretin hormone that regulates insulin secretion, gastric emptying, and appetite signaling through central and peripheral mechanisms.
Semaglutide is a GLP-1 receptor agonist with an extended half-life due to albumin binding modifications. It has been among the most studied compounds in the world for metabolic and weight research in recent years, with a substantial body of peer-reviewed literature.
Tirzepatide targets both GLP-1 and GIP receptors, representing the dual incretin agonist class. Retatrutide adds glucagon receptor agonism to GLP-1 and GIP, creating a triple agonist studied for synergistic metabolic effects. These multi-receptor approaches represent an active frontier in metabolic peptide research.
Research use only. GLP-1 class peptides are among the most studied compounds in metabolic science. All content reflects published research and does not constitute medical advice or treatment recommendations.
Tissue repair peptides represent a category with deep roots in both animal research and emerging clinical interest. BPC-157, TB-500, and GHK-Cu each act through distinct mechanisms but share a common research thread: the modulation of healing, regeneration, and inflammatory signaling pathways.
Body Protective Compound-157 is a synthetic pentadecapeptide derived from a protein found in gastric juice. It has been extensively studied in animal models for its effects on wound healing, tendon and ligament repair, angiogenesis, and gastrointestinal mucosal protection. Research suggests it modulates nitric oxide synthase and growth factor pathways.
TB-500 (Thymosin Beta-4) promotes cellular migration and angiogenesis. It is studied for its interaction with actin, which is fundamental to cell motility and wound repair. GHK-Cu (copper tripeptide) has been researched extensively for its roles in collagen synthesis, wound healing, anti-inflammatory signaling, and skin repair. It is among the most studied tripeptides in dermatological and regenerative research.
Research use only. Animal study findings may not translate to human outcomes. All products are for investigational use only and are not intended for clinical application without appropriate regulatory authorization.
Immune modulation and longevity represent two of the most dynamic frontiers in peptide research. This category spans thymic peptides studied for T-cell regulation, antioxidant compounds studied for oxidative stress reduction, and mitochondria-targeted peptides studied for cellular energy and aging.
TA-1 is a thymic peptide that has been studied for its ability to enhance T-cell maturation and modulate cytokine responses. Research across multiple disease contexts has characterized its immunomodulatory properties. It is one of the most published peptides in immunological research.
SS-31 (Elamipretide) is a cell-permeable tetrapeptide studied for its ability to target mitochondrial inner membranes and reduce reactive oxygen species. MOTS-C is a mitochondria-derived peptide studied for its role in metabolic regulation and cellular stress responses. NAD and Glutathione support fundamental cellular antioxidant and energy pathways.
Research use only. The longevity research field is evolving rapidly. All content reflects published scientific literature and does not constitute anti-aging or therapeutic claims.
Neuropeptide research encompasses compounds studied for neuroprotective, anxiolytic, cognitive, and sleep-modulating properties. This is an area of significant scientific interest given the limited treatments available for many neurological and cognitive research contexts.
Both Selank and Semax originated from Russian neuroscience research. Selank is a heptapeptide analog of tuftsin that has been studied for anxiolytic and nootropic effects in animal models, with proposed mechanisms involving GABA-A modulation and BDNF expression. Semax is an ACTH-derived peptide studied for cognitive enhancement and neuroprotection via upregulation of neurotrophic factors.
Dihexa is a small peptide derived from angiotensin IV that has been studied in animal models for its role in synaptogenesis and cognitive function. Delta Sleep-Inducing Peptide (DSIP) has been researched for sleep regulation, stress modulation, and potential neuroendocrine roles since its original characterization in the 1970s.
Research use only. Neurological peptide research is largely in preclinical stages. Findings from animal models may not translate to human outcomes. For licensed research use only.
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