The PeptideX Peptide Library
Evidence-Based Compound Profiles
The PeptideX Peptide Library provides detailed, research-backed profiles of peptide compounds across major therapeutic categories. Each profile includes a comprehensive breakdown of mechanism of action, published research findings from PubMed-indexed studies and registered clinical trials, documented safety information and side effect data, dosing protocols as reported in the literature, and fully cited primary sources.
This library is designed as a reference resource for researchers, students, healthcare professionals, and anyone seeking reliable, evidence-based peptide information — organized for rapid lookup and cross-referencing. Whether you are investigating a specific compound for a literature review, comparing mechanisms across peptide classes, or simply trying to understand what the published data actually says, our profiles provide structured, transparent analysis in one centralized hub.
All information is presented for educational purposes only. PeptideX does not sell peptides, prescribe treatments, or make therapeutic claims. Consult a qualified healthcare provider before starting any peptide therapy.
Browse by Category
Weight Loss & Metabolic Peptides
6 compounds
GLP-1 receptor agonists, dual/triple agonists, and small-molecule metabolic modulators driving the most active area of clinical peptide research.
Healing & Recovery Peptides
4 compounds
Tissue repair, wound healing, and musculoskeletal recovery compounds with extensive preclinical and emerging clinical evidence.
Anti-Aging & Skin Peptides
4 compounds
Longevity-focused compounds targeting telomere maintenance, collagen synthesis, gene expression modulation, and cellular regeneration.
Longevity & Mitochondrial Peptides
4 compounds
Mitochondrial-derived and mitochondria-targeting peptides being investigated for age-related metabolic decline and cellular energy optimization.
Growth Hormone Peptides
10 compounds
GHRH analogs, growth hormone releasing peptides, and secretagogues that stimulate endogenous GH production through distinct receptor pathways.
Cognitive & Nootropic Peptides
3 compounds
Neuropeptides investigated for cognitive enhancement, neuroprotection, anxiolysis, and neurotransmitter modulation in preclinical models.
Immune Modulation Peptides
3 compounds
Thymic peptides, antimicrobial peptides, and immunomodulators with applications in immune reconstitution, pathogen defense, and inflammation.
Complete A–Z Index
Quick access to every compound in the library.
Frequently Asked Questions
What are peptides?
Peptides are short chains of amino acids — typically between 2 and 50 — linked by peptide bonds. They serve as signaling molecules in the body, influencing processes ranging from immune response and tissue repair to metabolism and hormone regulation. Over 80 peptide-based drugs have been approved by the FDA.
Are peptides safe?
Safety varies significantly by compound, dosage, and route of administration. FDA-approved peptide drugs like semaglutide and tirzepatide have undergone rigorous clinical trials. Many other peptides are still in research phases. Always consult a healthcare provider before using any peptide therapy.
What is the difference between a peptide and a protein?
The distinction is primarily one of size. Peptides are generally defined as chains of 2–50 amino acids, while proteins are larger chains typically exceeding 50 amino acids. Both are built from the same amino acid building blocks, but their size differences influence their biological behavior, stability, and how they interact with cellular receptors.
Do peptides require a prescription?
It depends on the peptide. FDA-approved peptide medications like semaglutide (Ozempic, Wegovy) and tirzepatide (Mounjaro, Zepbound) require a prescription. Many other peptides are available through compounding pharmacies with a prescription, while some are sold for research use only and are not approved for human consumption.
Ready to dive deeper?
Our interactive tools let you compare peptides side-by-side, plan research cycles, and check compound interactions.
All peptide information is presented for educational and research purposes only. PeptideX does not sell peptides. Consult a qualified healthcare provider before starting any therapy. Read our full medical disclaimer.