New — Free Peptide Starter Guide (2026): 13 chapters, 34 cited studies

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ToolsCompareSelank vs Dermorphin

Selank vs Dermorphin

Side-by-side comparison of key properties, dosing, and research.

Cognitive Enhancement
Selank
Recovery & Repair
Dermorphin
Summary
Selank is a synthetic heptapeptide analog of tuftsin developed in Russia. It is a potent anxiolytic that reduces anxiety and enhances cognitive function without sedation or addiction. It is approved for clinical use in Russia for anxiety disorders.
Dermorphin is a naturally occurring heptapeptide opioid isolated from the skin of South American phyllomedusine frogs. It is one of the most potent endogenous mu-opioid receptor agonists known, approximately 30-40 times more potent than morphine by weight. Explored for pain management and fatigue modulation.
Half-Life
Minutes (but effects persist for hours)
Estimated 30-60 minutes (longer than endorphins due to D-Ala)
Admin Route
SubQ, Intranasal
Subcutaneous (research), Intrathecal (research), Intranasal (research)
Research
Typical Dose
250–500 mcg
Not established for human use; research doses vary widely
Frequency
1–3 times daily
Not established
Key Benefits
  • Reduces anxiety without sedation
  • Enhances memory and learning
  • Improves focus and concentration
  • Stabilizes mood
  • Reduces physiological stress response
  • May enhance motivation
  • No addiction potential or withdrawal
  • Fast-acting — effects within 20–30 minutes
  • Approved clinically in Russia for anxiety disorders
  • Potent analgesia superior to morphine on a per-weight basis
  • May reduce perception of fatigue in high-intensity activity
  • Longer-lasting than endogenous opioids due to D-amino acid substitution
  • Research tool for mu-opioid receptor pharmacology
  • Potential therapeutic application in refractory pain
Side Effects
  • Mild sedation at higher doses (paradoxical)
  • Fatigue (rare)
  • Irritability during discontinuation (uncommon)
  • High addiction and dependence potential (mu-opioid agonism)
  • Respiratory depression at high doses
  • Nausea, vomiting, constipation
  • Sedation and cognitive impairment
  • +2 more
Stacks With