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/ comparison

Selank
vs
Semax

Side-by-side comparison of mechanism, research, dosing, side effects, and pricing.

peptide

Selank

Synthetic tuftsin analog. Anxiety and cognitive research compound.

Cheapest
$56.47
30mg at FITSKNS
See Selank →
peptide

Semax

ACTH analog. Cognitive and neuroprotective research.

Cheapest
$64.91
30mg at Solyn Peptides
See Semax →
/ research scoring

Research base

Selank
Research Maturity★★★☆☆
Evidence Strength★★★☆☆

Multiple Russian and international studies on anxiolytic effects.

Semax
Research Maturity★★★☆☆
Evidence Strength★★★☆☆

40+ studies on cognitive enhancement and neuroprotection.

/ mechanism

How they work

Selank

Modulates GABA pathway, immune modulation.

Semax

BDNF upregulation, neuroprotective effects.

/ research dosing

Protocols compared

Selank
Range: 250-500 mcg/dose, 1-3x daily
Frequency: 1-3x daily
Route: Intranasal (0.15% solution)
Russian anxiolytic nootropic. Standard 0.15% intranasal solution = ~150mcg per spray. Doses 250-500mcg, 2-3x daily common.
Semax
Range: 300-1000 mcg/dose, 1-3x daily
Frequency: 1-3x daily
Route: Intranasal (0.1% or 1% solution)
Russian nootropic. 0.1% standard, 1% for higher doses. ACTH 4-10 analog. Cognitive research dosing.
/ side effects & timeline

What to expect

Selank
Side effects

Generally well-tolerated.

Timeline

2-4 weeks

Semax
Side effects

Minimal reported.

Timeline

2-4 weeks

/ pricing

Price comparison

Selank
Lowest price$56.47 (30mg)
Min $/mg$1.88/mg
Avg $/mg$2.97/mg
Max $/mg$3.71/mg
Semax
Lowest price$64.91 (30mg)
Min $/mg$2.16/mg
Avg $/mg$3.24/mg
Max $/mg$4.25/mg
/ which to pick

The honest verdict

Pick Selank if: Effective standalone for anxiety research.

Pick Semax if: Effective standalone for cognitive research.

Why not both? Some researchers run them together. Check our Interaction Matrix to see if these compounds synergize or work independently.

FOR RESEARCH USE ONLY. Both compounds are intended for laboratory research and not for human consumption.