Peptide Comparison
GlutathionevsLivagen
Your body's master antioxidant — a tiny three-part protein that shields your cells and helps clear out toxins.
Tetrapeptide bioregulator (Lys-Glu-Asp-Ala) that directly penetrates cell nuclei and binds double-stranded DNA to induce chromatin decondensation in senescent lymphocytes, activate ribosomal genes, inhibit enkephalin-degrading enzymes with an IC50 of 20 μM, and restore protein synthesis capacity in aging cells through selective epigenetic remodeling
At a Glance
Quick
comparison
Dose Range
Glutathione
250–1000 mg
Livagen
2–10 mg
Frequency
Glutathione
Once daily by mouth; IV and inhaled protocols are typically given 1–3 times per week
Livagen
Once daily
Administration
Glutathione
Subcutaneous injection
Livagen
Intramuscular injection
Cycle Length
Glutathione
Often used continuously; studied by mouth for up to 6 months
Livagen
8-12 weeks
Onset Speed
Glutathione
Builds gradually — blood and tissue levels rise over weeks of steady use, while IV and inhaled forms act faster
Livagen
Gradual (3-4 weeks)
Evidence Level
Glutathione
Moderate human trials (Phase 1-2)
Livagen
Limited human trials
Efficacy
Benefit
ratings
Antioxidant defense
Detoxification support
Immune support
Brain/neuroprotection interest
Cell Renewal
Liver Support
DNA Protection
Technical Data
Compound
specifications
Glutathione
Molecular Formula
C10H17N3O6S
Molecular Weight
307.33 g/mol
Half-Life
Very short in blood — roughly 2 to 10 minutes as intact glutathione; tissue pools turn over more slowly
Bioavailability
Low by mouth — intact glutathione is largely broken down in the gut by gamma-glutamyl transpeptidase; liposomal, intranasal, IV and inhaled routes bypass this
CAS Number
70-18-8
Livagen
Molecular Formula
C18H31N5O9
Molecular Weight
461.5 g/mol
Half-Life
Short plasma half-life typical of tetrapeptides; biological effects persist for weeks through epigenetic chromatin remodeling modifications; metabolized to constituent amino acids (lysine, glutamic acid, aspartic acid, alanine)
Bioavailability
Resistant to intestinal proteolysis when administered orally (weakly hydrolyzed by intestinal peptidases); efficient absorption from intramuscular injection sites; penetrates cytoplasmic and nuclear membranes to reach cell nuclei and nucleoli
CAS Number
Not assigned (research compound)
Protocols
Dosing
tiers
Glutathione
Livagen
Applications
Best
suited for
Glutathione
Everyday antioxidant support
Raising your body's own glutathione helps mop up free radicals — the unstable molecules behind cell wear-and-tear. Six months of daily oral dosing measurably increased body stores [2].
Liver and detox support
Glutathione tags toxins and drug byproducts so your liver can clear them out through the glutathione-S-transferase pathway [4].
Immune support
In the 6-month oral trial, the higher dose more than doubled the activity of natural killer cells, a front-line immune defender [2].
Brain-delivery research (Parkinson's)
Getting glutathione into the brain through the nose or a vein has been studied in Parkinson's disease, where it was well tolerated and reached brain tissue [1][3].
Livagen
Comprehensive geroprotective therapy targeting epigenetic chromatin remodeling in aging cells
Livagen is particularly well-suited for individuals focused on comprehensive geroprotective therapy targeting epigenetic chromatin remodeling in aging cells. Research and clinical experience suggest meaningful benefits in this area when used as part of a comprehensive treatment approach.
Supporting liver function and hepatoprotection in the context of aging
Livagen is particularly well-suited for individuals focused on supporting liver function and hepatoprotection in the context of aging. Research and clinical experience suggest meaningful benefits in this area when used as part of a comprehensive treatment approach.
Restoring protein synthesis and ribosomal function in elderly individuals
Livagen is particularly well-suited for individuals focused on restoring protein synthesis and ribosomal function in elderly individuals. Research and clinical experience suggest meaningful benefits in this area when used as part of a comprehensive treatment approach.
Khavinson bioregulator protocols for anti-aging and longevity
Livagen is particularly well-suited for individuals focused on khavinson bioregulator protocols for anti-aging and longevity. Research and clinical experience suggest meaningful benefits in this area when used as part of a comprehensive treatment approach.
Safety Profile
Side
effects
Glutathione
Common
- Generally well tolerated
- Unpleasant smell or taste
Uncommon
- Mild stomach upset, bloating or loose stools
- Transient cough
Serious
- Bronchospasm (airway tightening) in asthma
Livagen
Common
- Injection site reaction
- Mild fatigue
- Mild headache
- Digestive enzyme changes
Uncommon
- Transient flu-like symptoms
Serious
- No documented serious adverse effects
Research Status
Safety
& evidence
Glutathione
Evidence Level
Moderate human trials (Phase 1-2)
FDA Status
Sold as a dietary supplement; not FDA-approved as a drug. IV and inhaled uses are off-label/compounded.
Safety Overview
Glutathione has a reassuring safety record in studies. Taken by mouth at 250–1,000 mg a day for 6 months, people had no significant side effects [2], and IV glutathione at 1,400 mg three times a week was well tolerated with no safety concerns [1]. The clearest warning is for the inhaled form: in people with mild asthma, nebulized glutathione triggered coughing and airway tightening, likely from sulfite sensitivity [5].
Contraindications
- xKnown allergy to glutathione or a product ingredient
- xAsthma — inhaled/nebulized forms can trigger airway tightening, especially in sulfite-sensitive people
Livagen
Evidence Level
Limited human trials
FDA Status
Research compound
Safety Overview
Livagen (a liver-derived peptide extract) carries a safety profile established through decades of use in Eastern European hepatology and gastroenterology clinics. As an organ-derived extract rather than a synthetic single peptide, it contains multiple bioactive components promoting hepatocyte regeneration and cytoprotection. Adverse events are minimal in reported clinical experience—mild gastrointestinal upset occurring in <5% of patients. The compound shows no hepatotoxicity, nephrotoxicity, or immunosensitization in available safety surveillance data from thousands of patients.
Contraindications
- xKnown hypersensitivity to peptide bioregulators or constituent amino acids (lysine, glutamic acid, aspartic acid, alanine)
- xPregnancy and breastfeeding — insufficient reproductive safety data
- xActive autoimmune conditions in flare without physician supervision
- xConcurrent use of opioid medications — Livagen's enkephalinase inhibition may alter opioid metabolism
Decision Guide
Which is
right for you?
Choose Glutathione if...
- Everyday antioxidant and detox support
- Liver and immune support
- Healthy aging
- Adjunct interest in Parkinson's disease
Choose Livagen if...
- Comprehensive geroprotective therapy targeting epigenetic chromatin remodeling in aging cells
- Supporting liver function and hepatoprotection in the context of aging
- Restoring protein synthesis and ribosomal function in elderly individuals
- Khavinson bioregulator protocols for anti-aging and longevity