Oct '25 (edited) • Peptide Tips
🧠 SEMAX Variations Explained: Modifications & Applications
Let's break down the three main SEMAX variations, how they're chemically modified, and what each is best suited for. I will do a run-through and have all the variations updated on peptideprice.store tonight.
1. SEMAX (Regular/Base Form)
The Modification:
  • This is the unmodified base peptide (Met-Glu-His-Phe-Pro-Gly-Pro)
  • No protective groups added
  • Rapidly broken down by peptidases in the body
Half-Life: ~1-2 hours
What It's Good For:
  • Acute cognitive enhancement (studying, important meetings)
  • Quick mental clarity boosts
  • Situations where you want rapid onset and offset
  • Testing tolerance before moving to longer-acting versions
  • Fine-tuned control over timing of effects
Dosing: 2-3x daily (typically 300-600mcg per dose)
2. N-Acetyl SEMAX
The Modification:
  • An acetyl group is added to the N-terminus (beginning) of the peptide
  • This modification protects against enzymatic breakdown
  • Makes the molecule more stable in the bloodstream
Half-Life: ~2-4 hours
What It's Good For:
  • Extended focus during work sessions (4-6 hours)
  • Better balance between onset speed and duration
  • Reduced dosing frequency compared to regular SEMAX
  • Neuroplasticity support throughout the day
  • Better for maintaining stable mood and energy
Dosing: 1-2x daily (typically 300-900mcg per dose)
3. N-Acetyl SEMAX Amidate
The Modification:
  • Acetyl group on the N-terminus (like above)
  • PLUS an amide group on the C-terminus (end) of the peptide
  • Double protection from enzymatic degradation
  • Most stable and longest-lasting form
Half-Life: ~8-12 hours
What It's Good For:
  • All-day neuroprotection and cognitive support
  • Consistent mood elevation and stress resilience
  • Recovery protocols (TBI, stroke, neurodegenerative concerns)
  • Long-term neuroplasticity and BDNF upregulation
  • Convenient once-daily dosing
  • Best for sustained anxiety reduction
  • Ideal for people who don't want to redose throughout the day
Dosing: 1x daily, sometimes 2x (typically 600mcg-1.5mg per dose)
📊 Quick Comparison:
Onset Speed: Regular > N-Acetyl > Amidate
Duration: Amidate > N-Acetyl > Regular
Stability: Amidate > N-Acetyl > Regular
Convenience: Amidate > N-Acetyl > Regular
Acute Effects: Regular > N-Acetyl > Amidate
Neuroprotection: Amidate > N-Acetyl > Regular
💡 Pro Tips:
  • Start with N-Acetyl Amidate if you want simplicity and don't need immediate effects
  • Use regular SEMAX if you're sensitive to peptides or want controllable timing
  • N-Acetyl is the "Goldilocks" option - middle ground for most users
  • All three have similar mechanisms of action (BDNF, NGF, dopamine modulation)
  • The modifications don't change WHAT it does, just HOW LONG it does it
Which variation are you currently using? Drop your experience below! 👇
3:50
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Derek Pruski
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🧠 SEMAX Variations Explained: Modifications & Applications
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