TB-500 vs Pal-AHK
Side-by-side comparison of key properties, dosing, and research.
- Summary
- TB-500 is a synthetic fragment of Thymosin Beta-4, a naturally occurring peptide found in nearly all human and animal cells. It promotes cell migration to injury sites, accelerates tissue regeneration, and reduces chronic inflammation.
- Pal-AHK is the palmitoylated form of the AHK-Cu copper tripeptide, created by attaching a palmitic acid chain to enhance skin penetration and lipid bilayer affinity. The palmitoyl modification significantly improves dermal bioavailability compared to unmodified AHK, making it particularly effective in anti-aging and hair growth formulations.
- Half-Life
- 2–3 hours
- Extended (lipid depot effect in stratum corneum)
- Admin Route
- SubQ, IM
- Topical
- Research
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- Typical Dose
- 2–2.5 mg
- 0.01–0.05% in formulation
- Frequency
- Twice weekly
- Once or twice daily
- Key Benefits
- Enhances muscle tissue regeneration
- Accelerates healing of wounds and injuries
- Reduces inflammation and pain
- Improves flexibility and mobility
- Promotes new blood vessel formation
- Supports hair growth and skin health
- May improve cardiac function after injury
- Systemic healing effect — works at distance from injection site
- Enhanced skin penetration vs. unmodified AHK-Cu
- Stimulates dermal collagen and elastin production
- Promotes hair follicle anagen phase
- Antioxidant and wound healing activity
- Firming and plumping effect on aging skin
- Improved bioavailability via lipid bilayer incorporation
- Side Effects
- Injection site discomfort
- Fatigue (rare)
- Headache (rare)
- Generally well-tolerated
- Mild irritation at high concentrations in sensitive skin
- Possible comedogenicity at very high palmitate concentrations (formulation-dependent)
- Stacks With
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