Livagen vs Spermidine
Side-by-side comparison of key properties, dosing, and research.
Anti-Aging & Longevity
LivagenAnti-Aging & LongevityCognitive Enhancement
Spermidine- Summary
- Livagen is a dipeptide bioregulator (Lys-Glu) developed by Professor Vladimir Khavinson, tissue-specific for the liver and thymus. It supports hepatocyte function, promotes liver cell regeneration, and modulates immune function via thymic activity. Research suggests benefits in chronic liver disease, hepatic aging, and immune restoration following liver damage.
- Spermidine is a naturally occurring polyamine found in all living cells, with exceptionally high concentrations in wheat germ, aged cheese, and human sperm. It is the most studied autophagy-inducing dietary compound, shown to extend lifespan across multiple species and reduce cardiovascular and cognitive aging.
- Half-Life
- Short (minutes); gene-regulatory effects are sustained
- ~30–60 minutes, but gut bacteria produce it continuously; supplementation raises tissue levels over weeks
- Admin Route
- SubQ, Oral
- Oral
- Research
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- Typical Dose
- 10 mg per day
- 1–5 mg
- Frequency
- Daily for 10–30 days
- Once daily
- Key Benefits
- Supports hepatocyte regeneration and liver tissue repair
- Normalizes liver cell protein synthesis
- Immune modulation via thymic activity
- Potential benefits in chronic hepatitis and liver aging
- Anti-aging effects on hepatic tissue
- May support liver recovery after toxic insult or alcohol damage
- Complementary to NAD+ and glutathione in liver health protocols
- Induces autophagy — cellular self-cleaning
- Extends lifespan in yeast, flies, worms, and mice
- Reduces cardiovascular aging and arterial stiffness
- Reduces all-cause mortality (human epidemiological data)
- Neuroprotective: reduces amyloid and tau pathology
- Promotes hair growth (anagen phase activation)
- Reduces age-related immune decline
- Improves memory in aging models
- Side Effects
- Generally well tolerated
- Mild injection site reactions
- No significant hepatotoxic effects reported at standard doses
- Generally very well tolerated
- Rare: mild GI discomfort at high doses
- May temporarily reduce some gut bacteria species
- Rare: headache at initiation
- Stacks With
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