FOXO4-DRI vs Pal-AHK
Side-by-side comparison of key properties, dosing, and research.
- Summary
- FOXO4-DRI is a D-retro-inverso peptide derived from the FOXO4 protein that selectively induces apoptosis in senescent cells. By disrupting the FOXO4-p53 interaction that keeps senescent cells alive, it triggers programmed cell death specifically in these aging, pro-inflammatory cells while sparing healthy tissue.
- 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
- Estimated 2-4 hours (D-amino acid confers resistance to proteolysis)
- Extended (lipid depot effect in stratum corneum)
- Admin Route
- Subcutaneous, Intraperitoneal (research)
- Topical
- Research
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- Typical Dose
- 5 mg/kg in rodent studies; human equivalent approximately 0.5-1 mg/kg
- 0.01–0.05% in formulation
- Frequency
- 3 consecutive days per cycle
- Once or twice daily
- Key Benefits
- Selectively clears senescent cells (senolytics)
- Reduces senescence-associated secretory phenotype (SASP) and chronic inflammation
- Demonstrated restoration of physical fitness in aged mice
- May improve healthspan and reduce age-related tissue dysfunction
- Potential for treatment of age-related pathologies driven by cellular senescence
- Does not affect healthy non-senescent cells at therapeutic doses
- 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
- Limited human data; largely preclinical evidence
- Possible temporary inflammatory response as senescent cells are cleared (senolytic effect)
- Weight loss observed at high doses in rodent studies
- Unknown long-term safety profile in humans
- 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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