Semax vs Selank
Two Russian-developed nootropic peptides compared. Semax is primarily a cognitive enhancer (focus, memory, BDNF), while Selank is primarily an anxiolytic (anxiety reduction, calm focus). Both are nasal peptides often used together.
Side-by-Side Comparison
| Attribute | Semax | Selank |
|---|---|---|
| Class | Nootropic Peptides | Nootropic Peptides |
| FDA Legal Status | Compoundable (Rx) | Compoundable (Rx) |
| Evidence Rating | B - Moderate Evidence (Some Human Data) | B - Moderate Evidence (Some Human Data) |
| Administration | nasal, subcutaneous | nasal, subcutaneous |
| Half-Life | ~3-5 minutes (rapid onset, sustained effects) | ~5-10 minutes (rapid onset, sustained effects) |
| Typical Dosage | 200-600mcg nasal, 1-2x daily | 250-500mcg nasal, 1-3x daily |
| Primary Uses | Cognitive enhancement, Neuroprotection, Focus & attention, Stroke recovery, Anxiety reduction | Anxiety reduction, Cognitive enhancement, Immune modulation, Stress management |
Key Differences
- Semax is stimulating/activating; Selank is calming/anxiolytic
- Semax dramatically increases BDNF; Selank modulates GABA
- Semax is better for focus and cognitive performance; Selank better for anxiety and stress
- Both are approved prescription drugs in Russia
- Semax derives from ACTH; Selank derives from tuftsin (immune peptide)
When to Consider Semax
- Primary goal is cognitive enhancement and focus
- Need BDNF elevation for neuroplasticity
- Studying, creative work, or high-performance cognitive tasks
When to Consider Selank
- Primary goal is anxiety reduction
- Want cognitive enhancement without stimulation
- Seeking an alternative to benzodiazepines
- Stress management is the priority
Can They Be Stacked?
Yes - Semax and Selank can be stacked.
Semax and Selank are arguably the most popular nootropic peptide stack. Semax provides cognitive drive and BDNF, Selank provides calm focus and anxiety relief. Together they create balanced cognitive enhancement with emotional stability.
Frequently Asked Questions
What is the difference between Semax and Selank?
Two Russian-developed nootropic peptides compared. Semax is primarily a cognitive enhancer (focus, memory, BDNF), while Selank is primarily an anxiolytic (anxiety reduction, calm focus). Both are nasal peptides often used together.
Can Semax and Selank be used together?
Semax and Selank are arguably the most popular nootropic peptide stack. Semax provides cognitive drive and BDNF, Selank provides calm focus and anxiety relief. Together they create balanced cognitive enhancement with emotional stability.
Which is better, Semax or Selank?
The choice depends on your specific needs. Consider Semax if you primary goal is cognitive enhancement and focus. Consider Selank if you primary goal is anxiety reduction. Consult a healthcare provider for personalized advice.