Education only · provider review required
Research pathway · 06
Longevity & immune-support peptides, explained
"Longevity" is where the marketing is loudest and the human evidence thinnest. This page lists what is actually studied — mitochondrial, telomere and immune research — and how far each has got.
Free · about 10 minutes · reviewed by a licensed physician
What people are usually asking
The honest framing: no peptide has been shown to extend human lifespan. What exists is research into mechanisms that are associated with ageing — mitochondrial function, NAD+ metabolism, telomere biology, immune signalling — mostly in cells and animals, with a few early human studies. That is interesting, and it is also a long way from a treatment.
Peptides discussed in this context
Listed for education. Inclusion is not a recommendation, and none of these is an FDA-approved treatment for the question above.
Epithalon · Research Overview & Provider Discussion Guide
Telomere-biology research
Cell / animal / older Russian studies · Not an FDA-approved drug for this use
Read the page → 02NAD+ · Research Overview & Provider Discussion Guide
NAD+ · coenzyme, not a peptide
Precursor trials in humans, modest findings · not approved as a drug
Read the page → 03MOTS-c · Research Overview & Provider Discussion Guide
Mitochondrial peptide
Preclinical & early human · Not an FDA-approved drug for this use
Read the page → 04SS-31 · Research Overview & Provider Discussion Guide
Mitochondrial-targeted peptide
Human trials in mitochondrial disease · not approved for ageing
Read the page → 05LL-37 · Research Overview & Provider Discussion Guide
Antimicrobial peptide
Immune & wound research · Not an FDA-approved drug for this use
Read the page → 06KPV · Research Overview & Provider Discussion Guide
Anti-inflammatory tripeptide
Preclinical · Not an FDA-approved drug for this use
Read the page → 07Thymosin alpha-1
Immune research
Approved abroad · not in US
Read the page → 08Glutathione
Tripeptide antioxidant
Supplement · injectables not approved
Read the page → 09Vitamin B12 injections
B12 injections
Treatment for deficiency · no benefit if replete
Read the page → 10Vitamin D
Vitamin D
Test and correct · no megadose benefit
Read the page → 11IV vitamin therapy
IV vitamin therapy
No controlled evidence in healthy adults
Read the page → 12Metformin
Metformin (longevity)
Approved for diabetes · longevity unproven
Read the page →Where the evidence stands
Epithalon (epitalon) is studied for telomerase-related effects, almost entirely in cell and animal models and older Russian studies. NAD+ is a coenzyme rather than a peptide; its precursors have human trials with modest and inconsistent findings. MOTS-c and SS-31 are studied for mitochondrial function, with SS-31 in human trials for specific diseases. LL-37 and KPV are studied in immune and inflammatory contexts, preclinically.
Status reflects published research context only and is not a statement of safety, efficacy, or suitability for any person.
Questions worth bringing to a provider
The intake is where individual questions belong. These are the ones that tend to make that conversation useful.
- What is the human evidence, specifically, as opposed to cell or animal studies?
- What would we measure to know whether anything changed?
- What established interventions — exercise, sleep, blood-pressure and lipid control — should come first?
- What is known about long-term safety?
What happens if you start an intake
The intake asks about your health history, family history, current medications and what you are actually hoping to address. A licensed provider reviews it and tells you plainly what is and is not supported. Free, about 10 minutes, no obligation.
Frequently asked questions
Has any peptide been shown to extend human lifespan?
No. Research exists into mechanisms associated with ageing, but no peptide has been demonstrated to extend lifespan in humans.
Is NAD+ a peptide?
No. NAD+ is a coenzyme. It is included here because it is frequently discussed alongside peptides in longevity contexts and people ask about it.
Does Vitrex make anti-ageing claims?
No. Vitrex describes research status honestly, including where evidence is preclinical or absent, and makes no outcome claims.
Next step
Next step: a 3-minute confidential intake, reviewed by a licensed provider. No treatment is promised or implied.
Free · about 10 minutes · reviewed by a licensed physician
General education · Not medical advice · Provider approval required