Home/Compare Peptides
Comparison Tool

Compare Peptides
Side by Side

Select two peptides to compare their mechanisms, dosing protocols, research evidence, and safety profiles in a structured, easy-to-read format.

Peptide A

Semax

A neuropeptide for enhanced focus, memory, and brain protection

Peptide B

Selank

An anxiolytic nootropic peptide for calm focus and stress relief

Category
cognition
cognition
Primary Use
A neuropeptide for enhanced focus, memory, and brain protection
An anxiolytic nootropic peptide for calm focus and stress relief
Half-Life
N/A
N/A
Route
Subcutaneous injection
Intranasal (most common)
Typical Dose
N/A
N/A
Frequency
Once daily
Once or twice daily
Cycle Length
2–4 weeks on, 1–2 weeks off
2–4 weeks on, 1–2 weeks off
Research Status
Phase II
Phase II

Semax — Key Benefits

  • Supports cognitive enhancement and mental clarity
  • Provides neuroprotective effects
  • May improve memory, focus, and stress response
  • Increases BDNF (Brain-Derived Neurotrophic Factor)
  • Reduces anxiety and improves mood

Selank — Key Benefits

  • Reduces anxiety without sedation
  • Improves focus and cognitive performance under stress
  • Modulates the immune system
  • Antidepressant effects
  • Improves memory and learning

Semax — Side Effects

  • Increased anxiety (at high doses)
  • Irritability
  • Nasal irritation with intranasal use
  • Fatigue (rare)

Selank — Side Effects

  • Mild fatigue (rare)
  • Nasal irritation
  • Generally very well tolerated

Semax — How It Works

Semax works by increasing BDNF (Brain-Derived Neurotrophic Factor), a protein that acts like fertilizer for your neurons. More BDNF means your brain cells grow stronger connections, survive longer, and recover better from damage. Semax also nudges your dopamine and serotonin systems, which is why users often report improved mood and motivation alongside the cognitive benefits. When taken as a nasal spray, it travels directly from your nose to your brain, which is why effects can be felt within 30 to 60 minutes.

Selank — How It Works

Selank works by gently modulating several brain chemistry systems at once. It increases BDNF (the brain growth protein), influences your natural opioid-like pain and mood regulators, and fine-tunes serotonin, dopamine, and GABA activity. GABA is your brain's main calming signal — it is what benzodiazepines (like Valium) amplify. Selank works with GABA more subtly, which is why it reduces anxiety without the sedation, dependency, or withdrawal that comes with prescription anti-anxiety drugs.

Educational Use Only. This comparison is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare provider before starting any peptide protocol.