Dermatology · Research Phase
Trylagen (Tripeptide-10 Complex)
No lawful US pathway
01 · Overview
Trylagen is a proprietary cosmetic complex that incorporates Tripeptide-10 Citrulline along with other peptide and protein components, marketed to support collagen production and organization. Its tripeptide-10 citrulline component was designed to mimic decorin and, in laboratory assays, produced thinner and more uniform collagen fibres (PMID 18377618).
The complex as a whole is claimed by its supplier to act on multiple stages of collagen synthesis and protection, but these claims have not been tested in independent peer-reviewed studies.
02 · Research summary & key findings
No peer-reviewed studies of the Trylagen complex itself were found in PubMed. Evidence for one of its components comes from a small randomized controlled study in 24 volunteers, which reported antiwrinkle effects of tripeptide-10 citrulline over 60 days (PMID 28150423). Claims of increased collagen I, collagen III, and fibrillin expression in fibroblast cultures and skin models, and data on skin elasticity, derive from manufacturer assessments that have not been published in indexed dermatology journals.
03 · Regulatory status
Trylagen (Tripeptide-10 Complex) is in the research phase with limited clinical data in humans. Current evidence is primarily derived from preclinical (animal or in vitro) studies.
No lawful pathway today
Trylagen (Tripeptide-10 Complex) is not FDA-approved and does not currently have a lawful prescription or compounding pathway in the United States, so we do not sell it and will not book a consultation for it. That can change: in 2026 FDA began reviewing several peptides for compounding. If you are working on the goal it is studied for, a licensed clinician can tell you what is lawfully available, which may be something else.
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Trylagen (Tripeptide-10 Complex) is a research compound, is not FDA-approved, and has no lawful US compounding pathway, so we do not offer it and no clinician we work with will prescribe it. Products sold online as “research chemicals” are not made or tested to the standards required of medicines. If you are working on longevity and healthy ageing, a licensed clinician can tell you at a free consultation whether an FDA-approved or lawfully compounded treatment fits you, or whether nothing does.
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04 · Administration routes
- Topical
References
- [1]A new decorin-like tetrapeptide for optimal organization of collagen fibres Int J Cosmet Sci, 2008. PMID 18377618
- [2]The efficacy study of the combination of tripeptide-10-citrulline and acetyl hexapeptide-3. A prospective, randomized controlled study J Cosmet Dermatol, 2017. PMID 28150423
Primary literature
- PubMed: "Trylagen"
Peer-reviewed literature indexed by the National Library of Medicine.
- ClinicalTrials.gov: "Trylagen"
Registered interventional and observational studies, including status and phase.
- PubChem: "Trylagen"
Chemical structure, molecular properties, and bioactivity data.
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Disclaimer: 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. Clinicians: join the network.