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Klotho Peptide
Overview
Klotho is a transmembrane protein of approximately 1012 amino acids that exists in membrane-bound and secreted forms, with the soluble ectodomain functioning as a circulating factor. Klotho acts as a coreceptor for fibroblast growth factor 23 in phosphate metabolism and independently influences insulin signaling, oxidative stress, and cellular senescence pathways.
Mechanism of Action
Reduced klotho expression is associated with accelerated aging phenotypes in mice, while overexpression extends lifespan in rodent models. Therapeutic development focuses on peptide fragments or recombinant forms to replicate klotho's protective effects in age-related conditions.
Research Summary & Key Findings
Preclinical studies in rodents demonstrate that klotho administration improves cognition, attenuates kidney injury, and extends lifespan in some models. A small phase 1 trial evaluated recombinant klotho protein safety in healthy volunteers, confirming tolerability but not addressing longevity endpoints. No large-scale clinical trials have assessed klotho peptides for age-extension or healthspan outcomes in humans, leaving efficacy for longevity applications unproven.
Clinical Status
Klotho Peptide is in the research phase with limited clinical data in humans. Current evidence is primarily derived from preclinical (animal or in vitro) studies.
Administration Routes
References
Primary literature
- PubMed: "Klotho Peptide"
Peer-reviewed literature indexed by the National Library of Medicine.
- ClinicalTrials.gov: "Klotho Peptide"
Registered interventional and observational studies, including status and phase.
- PubChem: "Klotho Peptide"
Chemical structure, molecular properties, and bioactivity data.
Study-level citations for this compound are being verified against the primary sources before publication. The database queries above return the current indexed literature in the meantime.
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View detailsNo lawful pathway today
Klotho Peptide is not FDA-approved and does not currently have a lawful prescription or compounding pathway in the United States, so there is nothing for us to sell you here and no consultation to book. That can change: eight peptides moved back to a lawful pathway in February 2026.
Tell me if the status changes
One email, only if this compound's regulatory standing actually moves. Not a newsletter, not a sales sequence.
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List Your PracticeDisclaimer: This information is provided for educational and research purposes only. It is not intended as medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before starting any peptide therapy. The Peptide Association does not endorse or recommend any specific treatment protocol. See our editorial policy for how this content is produced and reviewed.