Thymalin vs Palmitoyl Tetrapeptide-7
Side-by-side comparison of key properties, dosing, and research.
Immune SupportAnti-Aging & Longevity
ThymalinSkin & Cosmetic
Palmitoyl Tetrapeptide-7- Summary
- Thymalin is a polypeptide complex isolated from calf thymus glands (developed by the Russian Gerontology Institute), shown to restore immune function, extend lifespan, and reverse thymic involution. Clinical studies demonstrate improved immune parameters and up to 40% reduction in mortality in elderly patients.
- Palmitoyl Tetrapeptide-7 (Rigin) is a cosmetic peptide consisting of palmitic acid linked to the tetrapeptide sequence GQPR (Gly-Gln-Pro-Arg). It was designed to mimic the biological activity of the IgG immunoglobulin C-terminus, which downregulates the production of interleukin-6 (IL-6), a key driver of skin aging and inflammation.
- Half-Life
- Not well characterized as a complex extract; individual peptides have varying kinetics
- Topical penetration-dependent; effects last hours to days
- Admin Route
- SubQ, IM
- Topical
- Research
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- Typical Dose
- 10 mg IM or SC daily
- 2-5 ppm concentration in formulation
- Frequency
- Once daily
- Twice daily
- Key Benefits
- Restores thymic function and T-cell immunity
- Extends healthy lifespan (documented in long-term studies)
- Reduces infectious disease incidence in elderly
- Normalizes immune parameters in immunodeficiency
- Anti-tumor immune surveillance
- Improves vaccine response in elderly
- Reduces cardiovascular mortality (40% in landmark Russian study)
- Normalizes neuroendocrine function
- Reduces IL-6 inflammatory cytokine in skin
- Prevents 'inflammaging' of the skin
- Inhibits MMP collagen-degrading enzymes
- Synergistic with Matrixyl for anti-aging
- Clinically tested for wrinkle and skin texture improvement
- Well-tolerated topically
- Side Effects
- Very well tolerated in decades of Russian clinical use
- Mild injection site reactions
- Rare: mild allergic reaction (natural extract)
- Transient flu-like symptoms on initiation (immune activation)
- Contact sensitization (rare)
- Well-tolerated at standard concentrations
- Stacks With
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