Ships from British Columbia, Canada|Canadian Orders Ship Domestically, No Border Crossing|International Shipping Available|Lab Verified|≥98% Purity Guarantee|Shipped Within 24hr|Batch-Specific COAs|Ships from British Columbia, Canada|Canadian Orders Ship Domestically, No Border Crossing|International Shipping Available|Lab Verified|≥98% Purity Guarantee|Shipped Within 24hr|Batch-Specific COAs|Ships from British Columbia, Canada|Canadian Orders Ship Domestically, No Border Crossing|International Shipping Available|Lab Verified|≥98% Purity Guarantee|Shipped Within 24hr|Batch-Specific COAs|Ships from British Columbia, Canada|Canadian Orders Ship Domestically, No Border Crossing|International Shipping Available|Lab Verified|≥98% Purity Guarantee|Shipped Within 24hr|Batch-Specific COAs|
All Comparisons

Cortagen vs PE-22-28

Research material comparison: purity standards, available formats, molecular data, batch COA documentation, and regulatory status. For in vitro research use only.

Cortagen: DPE-22-28: D
AttributeCortagenPE-22-28
CategoryNootropic / NeuroprotectiveNootropic / Neuroprotective
Evidence RatingDPreclinical / Uncontrolled Russian StudiesDPreclinical Only
Clinical StatusPreclinical / small open-label Russian studies only. No controlled clinical trials. Available as a dietary supplement in Russia.Preclinical tool compound only. No clinical trials. No regulatory evaluation.
MechanismCortagen is proposed by the Khavinson group to penetrate cells and interact with DNA regulatory sequences to normalize gene expression in cortical neurons. Preclinical studies from the developer report that cortagen promotes neuronal survival under ischemic and neurotoxic conditions, modulates neuro...PE-22-28 blocks the TREK-1 two-pore-domain potassium channel (KCNK2/K2P2.1), which is widely expressed in the brain. TREK-1 knockout mice display a depression-resistant phenotype, suggesting that TREK-1 blockade may have antidepressant effects. PE-22-28 is a more potent and shorter analog of spadin ...
Half-Life
Bioavailability
Molecular Weight~446 g/mol
WADA StatusNot ListedNot Listed
Research Half-Life
Key Use Cases
  • Neuroprotection Research
  • Anti-Aging Research
  • Antidepressant Research
  • Ion Channel Research
Safety Concerns
  • No controlled safety studies have been conducted
  • No serious adverse effects reported in Russian open-label observations
  • Long-term safety is unknown
  • No human safety data exist
  • Mouse studies at antidepressant-effective doses did not report overt toxicity
  • TREK-1 channels are expressed in heart, vasculature, and GI tract — potential for off-target effects
Contraindications
  • Pregnancy and breastfeeding (no safety data)
  • No established contraindications due to absence of clinical data
  • Not recommended as a substitute for evidence-based neurological treatments
  • Not for human use (research compound only)
  • No established contraindications due to absence of any clinical data
  • Theoretical cardiac risk due to TREK-1 expression in cardiomyocytes
Regulatory (US)Not FDA-approved or evaluated. Occasionally sold online as a research peptide.Not FDA-evaluated. Research tool compound. Sold by some peptide suppliers as a research chemical.

Research Material Specifications

Catalog specifications for the corresponding research materials, including batch documentation coverage.

SpecificationCortagenPE-22-28
Purity Standard≥98%≥98%
CAS NumberN/AN/A
Molecular FormulaN/AN/A
Available Formats20mg10mg
Batch COAs Published
Stock StatusOut of stockOut of stock

Research Disclaimer: This comparison is provided for educational purposes only. All products are sold exclusively for in vitro research use. The information presented is based on published preclinical and clinical research and does not constitute medical advice. Consult a qualified healthcare professional before making any decisions regarding peptide use.

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